672407977122 has 54 divisors (see below), whose sum is σ = 1694803936059. Its totient is φ = 192109606920.

The previous prime is 672407977121. The next prime is 672407977139. The reversal of 672407977122 is 221779704276.

672407977122 is a `hidden beast` number, since 67 + 2 + 407 + 97 + 71 + 22 = 666.

672407977122 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 only one way, i.e., 336203988561 + 336203988561 = 579831^2 + 579831^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=579831.

It is not an unprimeable number, because it can be changed into a prime (672407977121) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 24339097 + ... + 24366707.

Almost surely, 2^672407977122 is an apocalyptic number.

672407977122 is an abundant number, since it is smaller than the sum of its proper divisors (1022395958937).

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

672407977122 is an frugal number, since it uses more digits than its factorization.

672407977122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55244 (or 27623 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 672407977122 in words is "six hundred seventy-two billion, four hundred seven million, nine hundred seventy-seven thousand, one hundred twenty-two".