72156032252 has 12 divisors (see below), whose sum is σ = 132919006920. Its totient is φ = 34179173136.

The previous prime is 72156032251. The next prime is 72156032269. The reversal of 72156032252 is 25223065127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72156032251) 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, 474710663 + ... + 474710814.

It is an arithmetic number, because the mean of its divisors is an integer number (11076583910).

Almost surely, 2^72156032252 is an apocalyptic number.

It is an amenable number.

72156032252 is a deficient number, since it is larger than the sum of its proper divisors (60762974668).

72156032252 is a wasteful number, since it uses less digits than its factorization.

72156032252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949421500 (or 949421498 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

Adding to 72156032252 its reverse (25223065127), we get a palindrome (97379097379).

The spelling of 72156032252 in words is "seventy-two billion, one hundred fifty-six million, thirty-two thousand, two hundred fifty-two".