423564016256 has 64 divisors (see below), whose sum is σ = 901805892480. Its totient is φ = 197461291008.

The previous prime is 423564016247. The next prime is 423564016279. The reversal of 423564016256 is 652610465324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 676760 + ... + 1142423.

It is an arithmetic number, because the mean of its divisors is an integer number (14090717070).

Almost surely, 2^423564016256 is an apocalyptic number.

It is an amenable number.

423564016256 is an abundant number, since it is smaller than the sum of its proper divisors (478241876224).

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

423564016256 is a wasteful number, since it uses less digits than its factorization.

423564016256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1819321 (or 1819309 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 44.

The spelling of 423564016256 in words is "four hundred twenty-three billion, five hundred sixty-four million, sixteen thousand, two hundred fifty-six".