672399809650 has 12 divisors (see below), whose sum is σ = 1250663646042. Its totient is φ = 268959923840.

The previous prime is 672399809647. The next prime is 672399809687. The reversal of 672399809650 is 56908993276.

672399809650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 583633353681 + 88766455969 = 763959^2 + 297937^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6723998047 + ... + 6723998146.

Almost surely, 2^672399809650 is an apocalyptic number.

672399809650 is a deficient number, since it is larger than the sum of its proper divisors (578263836392).

672399809650 is a wasteful number, since it uses less digits than its factorization.

672399809650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13447996205 (or 13447996200 counting only the distinct ones).

The product of its (nonzero) digits is 44089920, while the sum is 64.

The spelling of 672399809650 in words is "six hundred seventy-two billion, three hundred ninety-nine million, eight hundred nine thousand, six hundred fifty".