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12798587088 = 2434717312677
BaseRepresentation
bin10111110101101101…
…01111000011010000
31020000221210120220000
423322312233003100
5202202414241323
65513554050000
7632106123660
oct137266570320
936027716800
1012798587088
115478517a01
122592279900
13128c741571
14895ada1a0
154ed918e43
hex2fadaf0d0

12798587088 has 400 divisors, whose sum is σ = 46288180224. Its totient is φ = 3329372160.

The previous prime is 12798587069. The next prime is 12798587089. The reversal of 12798587088 is 88078589721.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12798587089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 4779606 + ... + 4782282.

Almost surely, 212798587088 is an apocalyptic number.

12798587088 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 12798587088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23144090112).

12798587088 is an abundant number, since it is smaller than the sum of its proper divisors (33489593136).

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

12798587088 is a wasteful number, since it uses less digits than its factorization.

12798587088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2752 (or 2737 counting only the distinct ones).

The product of its (nonzero) digits is 18063360, while the sum is 63.

The spelling of 12798587088 in words is "twelve billion, seven hundred ninety-eight million, five hundred eighty-seven thousand, eighty-eight".