9872157795885 has 384 divisors, whose sum is σ = 24005051965440. Its totient is φ = 3627091353600.

The previous prime is 9872157795859. The next prime is 9872157795949. The reversal of 9872157795885 is 5885977512789.

9872157795885 is a `hidden beast` number, since 9 + 8 + 7 + 21 + 5 + 7 + 7 + 9 + 588 + 5 = 666.

It is not a de Polignac number, because 9872157795885 - 2⁹ = 9872157795373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 62002897 + ... + 62161913.

It is an arithmetic number, because the mean of its divisors is an integer number (62513156160).

Almost surely, 2^{9872157795885} is an apocalyptic number.

9872157795885 is a gapful number since it is divisible by the number (95) formed by its first and last digit.

It is an amenable number.

9872157795885 is an abundant number, since it is smaller than the sum of its proper divisors (14132894169555).

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

9872157795885 is a wasteful number, since it uses less digits than its factorization.

9872157795885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 159129 (or 159126 counting only the distinct ones).

The product of its digits is 3556224000, while the sum is 81.

The spelling of 9872157795885 in words is "nine trillion, eight hundred seventy-two billion, one hundred fifty-seven million, seven hundred ninety-five thousand, eight hundred eighty-five".