72158404272 has 80 divisors (see below), whose sum is σ = 197896083840. Its totient is φ = 22578103296.

The previous prime is 72158404271. The next prime is 72158404313. The reversal of 72158404272 is 27240485127.

It is not an unprimeable number, because it can be changed into a prime (72158404271) 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, 192603 + ... + 425925.

It is an arithmetic number, because the mean of its divisors is an integer number (2473701048).

Almost surely, 2^72158404272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72158404272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98948041920).

72158404272 is an abundant number, since it is smaller than the sum of its proper divisors (125737679568).

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

72158404272 is a wasteful number, since it uses less digits than its factorization.

72158404272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233730 (or 233724 counting only the distinct ones).

The product of its (nonzero) digits is 250880, while the sum is 42.

Adding to 72158404272 its reverse (27240485127), we get a palindrome (99398889399).

The spelling of 72158404272 in words is "seventy-two billion, one hundred fifty-eight million, four hundred four thousand, two hundred seventy-two".