520401961912 has 32 divisors (see below), whose sum is σ = 1120059630720. Its totient is φ = 222046898400.

The previous prime is 520401961897. The next prime is 520401961949. The reversal of 520401961912 is 219169104025.

It is a congruent number.

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, 20456214 + ... + 20481637.

It is an arithmetic number, because the mean of its divisors is an integer number (35001863460).

Almost surely, 2^520401961912 is an apocalyptic number.

It is an amenable number.

520401961912 is an abundant number, since it is smaller than the sum of its proper divisors (599657668808).

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

520401961912 is a wasteful number, since it uses less digits than its factorization.

520401961912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40938091 (or 40938087 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 520401961912 in words is "five hundred twenty billion, four hundred one million, nine hundred sixty-one thousand, nine hundred twelve".