521874307320071 has 12 divisors (see below), whose sum is σ = 539402606332632. Its totient is φ = 504898615782000.

The previous prime is 521874307320059. The next prime is 521874307320103. The reversal of 521874307320071 is 170023703478125.

It is a happy number.

It is not a de Polignac number, because 521874307320071 - 2⁴² = 517476260808967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521874307320271) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 72382925 + ... + 79265606.

It is an arithmetic number, because the mean of its divisors is an integer number (44950217194386).

Almost surely, 2^{521874307320071} is an apocalyptic number.

521874307320071 is a deficient number, since it is larger than the sum of its proper divisors (17528299012561).

521874307320071 is a wasteful number, since it uses less digits than its factorization.

521874307320071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151652174 (or 151652143 counting only the distinct ones).

The product of its (nonzero) digits is 1975680, while the sum is 50.

The spelling of 521874307320071 in words is "five hundred twenty-one trillion, eight hundred seventy-four billion, three hundred seven million, three hundred twenty thousand, seventy-one".