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13087069219840 = 2105711294127919
BaseRepresentation
bin1011111001110001001000…
…0111001010110000000000
31201100010000100121011211111
42332130102013022300000
53203404304210013330
643500041104053104
72520336526636360
oct276342207126000
951303010534744
1013087069219840
114196216439320
121574441004194
1373c14a550845
143335bb9b89a0
1517a65859432a
hexbe7121cac00

13087069219840 has 704 divisors, whose sum is σ = 41478809702400. Its totient is φ = 3842231500800.

The previous prime is 13087069219823. The next prime is 13087069219843. The reversal of 13087069219840 is 4891296078031.

It is a tau number, because it is divible by the number of its divisors (704).

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (13087069219843) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 468737401 + ... + 468765319.

Almost surely, 213087069219840 is an apocalyptic number.

13087069219840 is a gapful number since it is divisible by the number (10) 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 13087069219840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20739404851200).

13087069219840 is an abundant number, since it is smaller than the sum of its proper divisors (28391740482560).

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

13087069219840 is a wasteful number, since it uses less digits than its factorization.

13087069219840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28032 (or 28014 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 58.

The spelling of 13087069219840 in words is "thirteen trillion, eighty-seven billion, sixty-nine million, two hundred nineteen thousand, eight hundred forty".