15081951885 has 128 divisors (see below), whose sum is σ = 33191424000. Its totient is φ = 5644339200.

The previous prime is 15081951883. The next prime is 15081951901. The reversal of 15081951885 is 58815918051.

It is not a de Polignac number, because 15081951885 - 2¹ = 15081951883 is a prime.

It is a super-2 number, since 2×15081951885² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15081951883) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 603366 + ... + 627864.

It is an arithmetic number, because the mean of its divisors is an integer number (259308000).

Almost surely, 2^15081951885 is an apocalyptic number.

15081951885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15081951885 is an abundant number, since it is smaller than the sum of its proper divisors (18109472115).

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

15081951885 is a wasteful number, since it uses less digits than its factorization.

15081951885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24579.

The product of its (nonzero) digits is 576000, while the sum is 51.

The spelling of 15081951885 in words is "fifteen billion, eighty-one million, nine hundred fifty-one thousand, eight hundred eighty-five".