72158236980 has 48 divisors (see below), whose sum is σ = 202352580864. Its totient is φ = 19212718720.

The previous prime is 72158236951. The next prime is 72158236981. The reversal of 72158236980 is 8963285127.

It is a super-2 number, since 2×72158236980² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72158236981) 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, 881676 + ... + 960035.

It is an arithmetic number, because the mean of its divisors is an integer number (4215678768).

Almost surely, 2^72158236980 is an apocalyptic number.

It is an amenable number.

72158236980 is an abundant number, since it is smaller than the sum of its proper divisors (130194343884).

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

72158236980 is a wasteful number, since it uses less digits than its factorization.

72158236980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842376 (or 1842374 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 51.

The spelling of 72158236980 in words is "seventy-two billion, one hundred fifty-eight million, two hundred thirty-six thousand, nine hundred eighty".