72194168136 has 64 divisors (see below), whose sum is σ = 181694177280. Its totient is φ = 23903760960.

The previous prime is 72194168131. The next prime is 72194168161. The reversal of 72194168136 is 63186149127.

It is not an unprimeable number, because it can be changed into a prime (72194168131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6515481 + ... + 6526551.

It is an arithmetic number, because the mean of its divisors is an integer number (2838971520).

Almost surely, 2^72194168136 is an apocalyptic number.

It is an amenable number.

72194168136 is an abundant number, since it is smaller than the sum of its proper divisors (109500009144).

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

72194168136 is a wasteful number, since it uses less digits than its factorization.

72194168136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12874 (or 12870 counting only the distinct ones).

The product of its digits is 435456, while the sum is 48.

The spelling of 72194168136 in words is "seventy-two billion, one hundred ninety-four million, one hundred sixty-eight thousand, one hundred thirty-six".