72707706770 has 16 divisors (see below), whose sum is σ = 130876941888. Its totient is φ = 29082400560.

The previous prime is 72707706769. The next prime is 72707706779. The reversal of 72707706770 is 7760770727.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72707706779) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 808187 + ... + 893633.

It is an arithmetic number, because the mean of its divisors is an integer number (8179808868).

Almost surely, 2^72707706770 is an apocalyptic number.

72707706770 is a deficient number, since it is larger than the sum of its proper divisors (58169235118).

72707706770 is a wasteful number, since it uses less digits than its factorization.

72707706770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170545.

The product of its (nonzero) digits is 1411788, while the sum is 50.

The spelling of 72707706770 in words is "seventy-two billion, seven hundred seven million, seven hundred six thousand, seven hundred seventy".