72112181178 has 16 divisors (see below), whose sum is σ = 144520516800. Its totient is φ = 23988034656.

The previous prime is 72112181171. The next prime is 72112181179. The reversal of 72112181178 is 87118121127.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (72112181171) 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, 12336603 + ... + 12342446.

It is an arithmetic number, because the mean of its divisors is an integer number (9032532300).

Almost surely, 2^72112181178 is an apocalyptic number.

72112181178 is an abundant number, since it is smaller than the sum of its proper divisors (72408335622).

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

72112181178 is a wasteful number, since it uses less digits than its factorization.

72112181178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24679541.

The product of its digits is 12544, while the sum is 39.

The spelling of 72112181178 in words is "seventy-two billion, one hundred twelve million, one hundred eighty-one thousand, one hundred seventy-eight".