521260045320 has 128 divisors (see below), whose sum is σ = 1787377363200. Its totient is φ = 119131815936.

The previous prime is 521260045291. The next prime is 521260045349. The reversal of 521260045320 is 23540062125.

It is an interprime number because it is at equal distance from previous prime (521260045291) and next prime (521260045349).

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 8814892 + ... + 8873828.

It is an arithmetic number, because the mean of its divisors is an integer number (13963885650).

Almost surely, 2^521260045320 is an apocalyptic number.

It is an amenable number.

521260045320 is an abundant number, since it is smaller than the sum of its proper divisors (1266117317880).

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

521260045320 is a wasteful number, since it uses less digits than its factorization.

521260045320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69487 (or 69483 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The spelling of 521260045320 in words is "five hundred twenty-one billion, two hundred sixty million, forty-five thousand, three hundred twenty".