665357770124674 has 16 divisors (see below), whose sum is σ = 1118193402373056. Its totient is φ = 294261421676400.

The previous prime is 665357770124657. The next prime is 665357770124741. The reversal of 665357770124674 is 476421077753566.

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, 408696418182 + ... + 408696419809.

It is an arithmetic number, because the mean of its divisors is an integer number (69887087648316).

Almost surely, 2^{665357770124674} is an apocalyptic number.

665357770124674 is a deficient number, since it is larger than the sum of its proper divisors (452835632248382).

665357770124674 is a wasteful number, since it uses less digits than its factorization.

665357770124674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817392838041.

The product of its (nonzero) digits is 1244678400, while the sum is 70.

The spelling of 665357770124674 in words is "six hundred sixty-five trillion, three hundred fifty-seven billion, seven hundred seventy million, one hundred twenty-four thousand, six hundred seventy-four".