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13013885751768 = 23331121451343163
BaseRepresentation
bin1011110101100000100000…
…0010011001000111011000
31201002010010001222210202000
42331120020002121013120
53201204414223024033
643402255132241000
72512136135502606
oct275301002310730
951063101883660
1013013885751768
114168181265600
121562218010160
13735286705395
1432dc3827c876
151787c374da13
hexbd6080991d8

13013885751768 has 192 divisors, whose sum is σ = 39762275414400. Its totient is φ = 3940872408000.

The previous prime is 13013885751733. The next prime is 13013885751799. The reversal of 13013885751768 is 86715758831031.

It is a happy number.

13013885751768 is a `hidden beast` number, since 1 + 3 + 0 + 1 + 3 + 8 + 8 + 57 + 517 + 68 = 666.

It is a super-2 number, since 2×130138857517682 (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37751755 + ... + 38094917.

It is an arithmetic number, because the mean of its divisors is an integer number (207095184450).

Almost surely, 213013885751768 is an apocalyptic number.

13013885751768 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13013885751768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19881137707200).

13013885751768 is an abundant number, since it is smaller than the sum of its proper divisors (26748389662632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13013885751768 is a wasteful number, since it uses less digits than its factorization.

13013885751768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344651 (or 344630 counting only the distinct ones).

The product of its (nonzero) digits is 33868800, while the sum is 63.

The spelling of 13013885751768 in words is "thirteen trillion, thirteen billion, eight hundred eighty-five million, seven hundred fifty-one thousand, seven hundred sixty-eight".