72110381872 has 20 divisors (see below), whose sum is σ = 140415950800. Its totient is φ = 35874007488.

The previous prime is 72110381857. The next prime is 72110381911. The reversal of 72110381872 is 27818301127.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11320683 + ... + 11327050.

It is an arithmetic number, because the mean of its divisors is an integer number (7020797540).

Almost surely, 2^72110381872 is an apocalyptic number.

It is an amenable number.

72110381872 is a deficient number, since it is larger than the sum of its proper divisors (68305568928).

72110381872 is a wasteful number, since it uses less digits than its factorization.

72110381872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22647940 (or 22647934 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 40.

Adding to 72110381872 its reverse (27818301127), we get a palindrome (99928682999).

The spelling of 72110381872 in words is "seventy-two billion, one hundred ten million, three hundred eighty-one thousand, eight hundred seventy-two".