672160521660 has 48 divisors (see below), whose sum is σ = 1895787071136. Its totient is φ = 177934461952.

The previous prime is 672160521647. The next prime is 672160521727. The reversal of 672160521660 is 66125061276.

It is a congruent number.

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, 40877457 + ... + 40893896.

It is an arithmetic number, because the mean of its divisors is an integer number (39495563982).

Almost surely, 2^672160521660 is an apocalyptic number.

672160521660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

672160521660 is an abundant number, since it is smaller than the sum of its proper divisors (1223626549476).

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

672160521660 is a wasteful number, since it uses less digits than its factorization.

672160521660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81771502 (or 81771500 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 42.

The spelling of 672160521660 in words is "six hundred seventy-two billion, one hundred sixty million, five hundred twenty-one thousand, six hundred sixty".