521363504445 has 32 divisors (see below), whose sum is σ = 954164766720. Its totient is φ = 238134012480.

The previous prime is 521363504437. The next prime is 521363504477. The reversal of 521363504445 is 544405363125.

It is not a de Polignac number, because 521363504445 - 2³ = 521363504437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 521363504397 and 521363504406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1997185 + ... + 2243094.

It is an arithmetic number, because the mean of its divisors is an integer number (29817648960).

Almost surely, 2^521363504445 is an apocalyptic number.

It is an amenable number.

521363504445 is a deficient number, since it is larger than the sum of its proper divisors (432801262275).

521363504445 is a wasteful number, since it uses less digits than its factorization.

521363504445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4241465.

The product of its (nonzero) digits is 864000, while the sum is 42.

The spelling of 521363504445 in words is "five hundred twenty-one billion, three hundred sixty-three million, five hundred four thousand, four hundred forty-five".