15251398628055 has 32 divisors (see below), whose sum is σ = 25189853257728. Its totient is φ = 7871550086400.

The previous prime is 15251398628041. The next prime is 15251398628057. The reversal of 15251398628055 is 55082689315251.

It is not a de Polignac number, because 15251398628055 - 2³² = 15247103660759 is a prime.

It is a super-2 number, since 2×15251398628055² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 15251398628055.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15251398628057) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29180587 + ... + 29698643.

It is an arithmetic number, because the mean of its divisors is an integer number (787182914304).

Almost surely, 2^{15251398628055} is an apocalyptic number.

15251398628055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

15251398628055 is a deficient number, since it is larger than the sum of its proper divisors (9938454629673).

15251398628055 is a wasteful number, since it uses less digits than its factorization.

15251398628055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581407.

The product of its (nonzero) digits is 25920000, while the sum is 60.

The spelling of 15251398628055 in words is "fifteen trillion, two hundred fifty-one billion, three hundred ninety-eight million, six hundred twenty-eight thousand, fifty-five".