664671751724210 has 32 divisors (see below), whose sum is σ = 1202692311235584. Its totient is φ = 264472487856000.

The previous prime is 664671751724179. The next prime is 664671751724263. The reversal of 664671751724210 is 12427157176466.

It is a self number, because there is not a number n which added to its sum of digits gives 664671751724210.

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, 118038965 + ... + 123541655.

It is an arithmetic number, because the mean of its divisors is an integer number (37584134726112).

Almost surely, 2^{664671751724210} is an apocalyptic number.

664671751724210 is a deficient number, since it is larger than the sum of its proper divisors (538020559511374).

664671751724210 is a wasteful number, since it uses less digits than its factorization.

664671751724210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5566130.

The product of its (nonzero) digits is 23708160, while the sum is 59.

The spelling of 664671751724210 in words is "six hundred sixty-four trillion, six hundred seventy-one billion, seven hundred fifty-one million, seven hundred twenty-four thousand, two hundred ten".