55731001157268 has 96 divisors (see below), whose sum is σ = 131692152582144. Its totient is φ = 18342734686848.

The previous prime is 55731001157263. The next prime is 55731001157269. The reversal of 55731001157268 is 86275110013755.

It is a self number, because there is not a number n which added to its sum of digits gives 55731001157268.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55731001157263) 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, 180107221 + ... + 180416387.

It is an arithmetic number, because the mean of its divisors is an integer number (1371793256064).

Almost surely, 2^{55731001157268} is an apocalyptic number.

It is an amenable number.

55731001157268 is an abundant number, since it is smaller than the sum of its proper divisors (75961151424876).

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

55731001157268 is a wasteful number, since it uses less digits than its factorization.

55731001157268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 309941 (or 309939 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 51.

The spelling of 55731001157268 in words is "fifty-five trillion, seven hundred thirty-one billion, one million, one hundred fifty-seven thousand, two hundred sixty-eight".