672217722944 has 14 divisors (see below), whose sum is σ = 1333932044094. Its totient is φ = 336108861440.

The previous prime is 672217722923. The next prime is 672217722961. The reversal of 672217722944 is 449227712276.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 663247360000 + 8970362944 = 814400^2 + 94712^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5251700897 + ... + 5251701024.

Almost surely, 2^672217722944 is an apocalyptic number.

672217722944 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

672217722944 is a deficient number, since it is larger than the sum of its proper divisors (661714321150).

672217722944 is a wasteful number, since it uses less digits than its factorization.

672217722944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10503401933 (or 10503401923 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 53.

The spelling of 672217722944 in words is "six hundred seventy-two billion, two hundred seventeen million, seven hundred twenty-two thousand, nine hundred forty-four".