668577542010 has 32 divisors (see below), whose sum is σ = 1833812687232. Its totient is φ = 152817723840.

The previous prime is 668577541987. The next prime is 668577542021. The reversal of 668577542010 is 10245775866.

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, 1591851081 + ... + 1591851500.

It is an arithmetic number, because the mean of its divisors is an integer number (57306646476).

Almost surely, 2^668577542010 is an apocalyptic number.

668577542010 is an abundant number, since it is smaller than the sum of its proper divisors (1165235145222).

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

668577542010 is a wasteful number, since it uses less digits than its factorization.

668577542010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3183702598.

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 668577542010 in words is "six hundred sixty-eight billion, five hundred seventy-seven million, five hundred forty-two thousand, ten".