72004373405 has 16 divisors (see below), whose sum is σ = 87039638400. Its totient is φ = 57181118400.

The previous prime is 72004373401. The next prime is 72004373411. The reversal of 72004373405 is 50437340027.

It is not a de Polignac number, because 72004373405 - 2² = 72004373401 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72004373401) 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, 1045526 + ... + 1112264.

It is an arithmetic number, because the mean of its divisors is an integer number (5439977400).

Almost surely, 2^72004373405 is an apocalyptic number.

It is an amenable number.

72004373405 is a deficient number, since it is larger than the sum of its proper divisors (15035264995).

72004373405 is a wasteful number, since it uses less digits than its factorization.

72004373405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68324.

The product of its (nonzero) digits is 70560, while the sum is 35.

The spelling of 72004373405 in words is "seventy-two billion, four million, three hundred seventy-three thousand, four hundred five".