521470111682201 has 12 divisors (see below), whose sum is σ = 587166305963412. Its totient is φ = 462501207696000.

The previous prime is 521470111682161. The next prime is 521470111682207. The reversal of 521470111682201 is 102286111074125.

It can be written as a sum of positive squares in 2 ways, for example, as 221451303937600 + 300018807744601 = 14881240^2 + 17321051^2 .

It is not a de Polignac number, because 521470111682201 - 2²⁶ = 521470044573337 is a prime.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (521470111682207) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 52556950460 + ... + 52556960381.

It is an arithmetic number, because the mean of its divisors is an integer number (48930525496951).

Almost surely, 2^{521470111682201} is an apocalyptic number.

It is an amenable number.

521470111682201 is a deficient number, since it is larger than the sum of its proper divisors (65696194281211).

521470111682201 is a wasteful number, since it uses less digits than its factorization.

521470111682201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105113910904 (or 105113910893 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 41.

The spelling of 521470111682201 in words is "five hundred twenty-one trillion, four hundred seventy billion, one hundred eleven million, six hundred eighty-two thousand, two hundred one".