72117561362 has 16 divisors (see below), whose sum is σ = 134869205952. Its totient is φ = 28097751120.

The previous prime is 72117561359. The next prime is 72117561437. The reversal of 72117561362 is 26316571127.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234147773 + ... + 234148080.

It is an arithmetic number, because the mean of its divisors is an integer number (8429325372).

Almost surely, 2^72117561362 is an apocalyptic number.

72117561362 is a deficient number, since it is larger than the sum of its proper divisors (62751644590).

72117561362 is a wasteful number, since it uses less digits than its factorization.

72117561362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468295873.

The product of its digits is 105840, while the sum is 41.

The spelling of 72117561362 in words is "seventy-two billion, one hundred seventeen million, five hundred sixty-one thousand, three hundred sixty-two".