72194109500 has 24 divisors (see below), whose sum is σ = 157671936240. Its totient is φ = 28877643600.

The previous prime is 72194109433. The next prime is 72194109509. The reversal of 72194109500 is 590149127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72194109509) 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 7 ways as a sum of consecutive naturals, for example, 72193610 + ... + 72194609.

It is an arithmetic number, because the mean of its divisors is an integer number (6569664010).

Almost surely, 2^72194109500 is an apocalyptic number.

It is an amenable number.

72194109500 is an abundant number, since it is smaller than the sum of its proper divisors (85477826740).

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

72194109500 is a wasteful number, since it uses less digits than its factorization.

72194109500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144388238 (or 144388226 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 38.

The spelling of 72194109500 in words is "seventy-two billion, one hundred ninety-four million, one hundred nine thousand, five hundred".