72203720577064 has 32 divisors (see below), whose sum is σ = 135937861605000. Its totient is φ = 35953908404992.

The previous prime is 72203720577031. The next prime is 72203720577067. The reversal of 72203720577064 is 46077502730227.

It can be written as a sum of positive squares in 4 ways, for example, as 57469408016164 + 14734312560900 = 7580858^2 + 3838530^2 .

It is not an unprimeable number, because it can be changed into a prime (72203720577067) 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, 15733339 + ... + 19797610.

Almost surely, 2^{72203720577064} is an apocalyptic number.

It is an amenable number.

72203720577064 is a deficient number, since it is larger than the sum of its proper divisors (63734141027936).

72203720577064 is a wasteful number, since it uses less digits than its factorization.

72203720577064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35531997 (or 35531993 counting only the distinct ones).

The product of its (nonzero) digits is 6914880, while the sum is 52.

The spelling of 72203720577064 in words is "seventy-two trillion, two hundred three billion, seven hundred twenty million, five hundred seventy-seven thousand, sixty-four".