72907237279 has 4 divisors (see below), whose sum is σ = 73028547760. Its totient is φ = 72785926800.

The previous prime is 72907237237. The next prime is 72907237369. The reversal of 72907237279 is 97273270927.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72907237279 - 2¹¹ = 72907235231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72907237219) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60654339 + ... + 60655540.

It is an arithmetic number, because the mean of its divisors is an integer number (18257136940).

Almost surely, 2^72907237279 is an apocalyptic number.

72907237279 is a deficient number, since it is larger than the sum of its proper divisors (121310481).

72907237279 is a wasteful number, since it uses less digits than its factorization.

72907237279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121310480.

The product of its (nonzero) digits is 4667544, while the sum is 55.

The spelling of 72907237279 in words is "seventy-two billion, nine hundred seven million, two hundred thirty-seven thousand, two hundred seventy-nine".