99997540258872 has 64 divisors (see below), whose sum is σ = 250063367385600. Its totient is φ = 33323245862400.

The previous prime is 99997540258841. The next prime is 99997540258943. The reversal of 99997540258872 is 27885204579999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1479197872 + ... + 1479265472.

It is an arithmetic number, because the mean of its divisors is an integer number (3907240115400).

Almost surely, 2^{99997540258872} is an apocalyptic number.

It is an amenable number.

99997540258872 is an abundant number, since it is smaller than the sum of its proper divisors (150065827126728).

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

99997540258872 is a wasteful number, since it uses less digits than its factorization.

99997540258872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83836 (or 83832 counting only the distinct ones).

The product of its (nonzero) digits is 8230118400, while the sum is 84.

The spelling of 99997540258872 in words is "ninety-nine trillion, nine hundred ninety-seven billion, five hundred forty million, two hundred fifty-eight thousand, eight hundred seventy-two".