72045018708 has 48 divisors (see below), whose sum is σ = 184104634560. Its totient is φ = 21791971584.

The previous prime is 72045018701. The next prime is 72045018719. The reversal of 72045018708 is 80781054027.

It is a self number, because there is not a number n which added to its sum of digits gives 72045018708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72045018701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3904585 + ... + 3922992.

It is an arithmetic number, because the mean of its divisors is an integer number (3835513220).

Almost surely, 2^72045018708 is an apocalyptic number.

72045018708 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

72045018708 is an abundant number, since it is smaller than the sum of its proper divisors (112059615852).

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

72045018708 is a wasteful number, since it uses less digits than its factorization.

72045018708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7827656 (or 7827654 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The spelling of 72045018708 in words is "seventy-two billion, forty-five million, eighteen thousand, seven hundred eight".