420564130656 has 24 divisors (see below), whose sum is σ = 1103980843224. Its totient is φ = 140188043520.

The previous prime is 420564130627. The next prime is 420564130667. The reversal of 420564130656 is 656031465024.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2190438085 + ... + 2190438276.

It is an arithmetic number, because the mean of its divisors is an integer number (45999201801).

Almost surely, 2^420564130656 is an apocalyptic number.

It is an amenable number.

420564130656 is an abundant number, since it is smaller than the sum of its proper divisors (683416712568).

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

420564130656 is a wasteful number, since it uses less digits than its factorization.

420564130656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4380876374 (or 4380876366 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 420564130656 in words is "four hundred twenty billion, five hundred sixty-four million, one hundred thirty thousand, six hundred fifty-six".