72664801770 has 32 divisors (see below), whose sum is σ = 190249663680. Its totient is φ = 17615709440.

The previous prime is 72664801763. The next prime is 72664801771. The reversal of 72664801770 is 7710846627.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (72664801771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110097855 + ... + 110098514.

It is an arithmetic number, because the mean of its divisors is an integer number (5945301990).

Almost surely, 2^72664801770 is an apocalyptic number.

72664801770 is an abundant number, since it is smaller than the sum of its proper divisors (117584861910).

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

72664801770 is a wasteful number, since it uses less digits than its factorization.

72664801770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220196390.

The product of its (nonzero) digits is 790272, while the sum is 48.

The spelling of 72664801770 in words is "seventy-two billion, six hundred sixty-four million, eight hundred one thousand, seven hundred seventy".