667737473460772 has 96 divisors (see below), whose sum is σ = 1382531143190400. Its totient is φ = 278191249889280.

The previous prime is 667737473460763. The next prime is 667737473460821. The reversal of 667737473460772 is 277064374737766.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 240925308 + ... + 243681100.

It is an arithmetic number, because the mean of its divisors is an integer number (14401366074900).

Almost surely, 2^{667737473460772} is an apocalyptic number.

It is an amenable number.

667737473460772 is an abundant number, since it is smaller than the sum of its proper divisors (714793669729628).

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

667737473460772 is a wasteful number, since it uses less digits than its factorization.

667737473460772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2758813 (or 2758811 counting only the distinct ones).

The product of its (nonzero) digits is 7318708992, while the sum is 76.

The spelling of 667737473460772 in words is "six hundred sixty-seven trillion, seven hundred thirty-seven billion, four hundred seventy-three million, four hundred sixty thousand, seven hundred seventy-two".