664571056354610 has 32 divisors (see below), whose sum is σ = 1211391374711040. Its totient is φ = 262458880414848.

The previous prime is 664571056354571. The next prime is 664571056354657. The reversal of 664571056354610 is 16453650175466.

It is a self number, because there is not a number n which added to its sum of digits gives 664571056354610.

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, 37616774 + ... + 52384766.

It is an arithmetic number, because the mean of its divisors is an integer number (37855980459720).

Almost surely, 2^{664571056354610} is an apocalyptic number.

664571056354610 is a deficient number, since it is larger than the sum of its proper divisors (546820318356430).

664571056354610 is a wasteful number, since it uses less digits than its factorization.

664571056354610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14825042.

The product of its (nonzero) digits is 54432000, while the sum is 59.

The spelling of 664571056354610 in words is "six hundred sixty-four trillion, five hundred seventy-one billion, fifty-six million, three hundred fifty-four thousand, six hundred ten".