666287030256 has 40 divisors (see below), whose sum is σ = 1724077223424. Its totient is φ = 221729776320.

The previous prime is 666287030209. The next prime is 666287030287. The reversal of 666287030256 is 652030782666.

It is a junction number, because it is equal to n+sod(n) for n = 666287030199 and 666287030208.

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, 11404950 + ... + 11463221.

Almost surely, 2^666287030256 is an apocalyptic number.

It is an amenable number.

666287030256 is an abundant number, since it is smaller than the sum of its proper divisors (1057790193168).

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

666287030256 is a wasteful number, since it uses less digits than its factorization.

666287030256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22868789 (or 22868783 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 51.

The spelling of 666287030256 in words is "six hundred sixty-six billion, two hundred eighty-seven million, thirty thousand, two hundred fifty-six".