291872121080928 has 96 divisors (see below), whose sum is σ = 795297617372160. Its totient is φ = 93626306465280.

The previous prime is 291872121080873. The next prime is 291872121080941. The reversal of 291872121080928 is 829080121278192.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273420675 + ... + 274486082.

It is an arithmetic number, because the mean of its divisors is an integer number (8284350180960).

Almost surely, 2^{291872121080928} is an apocalyptic number.

It is an amenable number.

291872121080928 is an abundant number, since it is smaller than the sum of its proper divisors (503425496291232).

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

291872121080928 is a wasteful number, since it uses less digits than its factorization.

291872121080928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547906980 (or 547906972 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 60.

The spelling of 291872121080928 in words is "two hundred ninety-one trillion, eight hundred seventy-two billion, one hundred twenty-one million, eighty thousand, nine hundred twenty-eight".