351623604666 has 32 divisors (see below), whose sum is σ = 709304258880. Its totient is φ = 116202507264.

The previous prime is 351623604659. The next prime is 351623604733. The reversal of 351623604666 is 666406326153.

It is a super-2 number, since 2×351623604666² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 178876 + ... + 857463.

It is an arithmetic number, because the mean of its divisors is an integer number (22165758090).

Almost surely, 2^351623604666 is an apocalyptic number.

351623604666 is an abundant number, since it is smaller than the sum of its proper divisors (357680654214).

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

351623604666 is a wasteful number, since it uses less digits than its factorization.

351623604666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036830.

The product of its (nonzero) digits is 2799360, while the sum is 48.

The spelling of 351623604666 in words is "three hundred fifty-one billion, six hundred twenty-three million, six hundred four thousand, six hundred sixty-six".