521827406640146 has 16 divisors (see below), whose sum is σ = 789700072627968. Its totient is φ = 258604026105600.

The previous prime is 521827406640109. The next prime is 521827406640191. The reversal of 521827406640146 is 641046604728125.

It is a junction number, because it is equal to n+sod(n) for n = 521827406640091 and 521827406640100.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2494147190 + ... + 2494356401.

It is an arithmetic number, because the mean of its divisors is an integer number (49356254539248).

Almost surely, 2^{521827406640146} is an apocalyptic number.

521827406640146 is a deficient number, since it is larger than the sum of its proper divisors (267872665987822).

521827406640146 is a wasteful number, since it uses less digits than its factorization.

521827406640146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4988504057.

The product of its (nonzero) digits is 15482880, while the sum is 56.

The spelling of 521827406640146 in words is "five hundred twenty-one trillion, eight hundred twenty-seven billion, four hundred six million, six hundred forty thousand, one hundred forty-six".