72400647433723 has 16 divisors (see below), whose sum is σ = 84764808063936. Its totient is φ = 60541899356160.

The previous prime is 72400647433721. The next prime is 72400647433759. The reversal of 72400647433723 is 32733474600427.

It is a cyclic number.

It is not a de Polignac number, because 72400647433723 - 2¹ = 72400647433721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72400647433721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3375115 + ... + 12497707.

It is an arithmetic number, because the mean of its divisors is an integer number (5297800503996).

Almost surely, 2^{72400647433723} is an apocalyptic number.

72400647433723 is a deficient number, since it is larger than the sum of its proper divisors (12364160630213).

72400647433723 is a wasteful number, since it uses less digits than its factorization.

72400647433723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9150294.

The product of its (nonzero) digits is 14224896, while the sum is 52.

The spelling of 72400647433723 in words is "seventy-two trillion, four hundred billion, six hundred forty-seven million, four hundred thirty-three thousand, seven hundred twenty-three".