521614155240464 has 40 divisors (see below), whose sum is σ = 1187310542178432. Its totient is φ = 218859086113920.

The previous prime is 521614155240427. The next prime is 521614155240467. The reversal of 521614155240464 is 464042551416125.

It is not an unprimeable number, because it can be changed into a prime (521614155240467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113989105064 + ... + 113989109639.

Almost surely, 2^{521614155240464} is an apocalyptic number.

It is an amenable number.

521614155240464 is an abundant number, since it is smaller than the sum of its proper divisors (665696386937968).

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

521614155240464 is a wasteful number, since it uses less digits than its factorization.

521614155240464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227978214735 (or 227978214729 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 50.

The spelling of 521614155240464 in words is "five hundred twenty-one trillion, six hundred fourteen billion, one hundred fifty-five million, two hundred forty thousand, four hundred sixty-four".