72532173263720 has 16 divisors (see below), whose sum is σ = 163197389843460. Its totient is φ = 29012869305472.

The previous prime is 72532173263713. The next prime is 72532173263729. The reversal of 72532173263720 is 2736237123527.

It can be written as a sum of positive squares in 2 ways, for example, as 71819557028164 + 712616235556 = 8474642^2 + 844166^2 .

It is not an unprimeable number, because it can be changed into a prime (72532173263729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906652165757 + ... + 906652165836.

Almost surely, 2^{72532173263720} is an apocalyptic number.

It is an amenable number.

72532173263720 is an abundant number, since it is smaller than the sum of its proper divisors (90665216579740).

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

72532173263720 is a wasteful number, since it uses less digits than its factorization.

72532173263720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1813304331604 (or 1813304331600 counting only the distinct ones).

The product of its (nonzero) digits is 4445280, while the sum is 50.

The spelling of 72532173263720 in words is "seventy-two trillion, five hundred thirty-two billion, one hundred seventy-three million, two hundred sixty-three thousand, seven hundred twenty".