72867292793 has 4 divisors (see below), whose sum is σ = 74242147428. Its totient is φ = 71492438160.

The previous prime is 72867292783. The next prime is 72867292807. The reversal of 72867292793 is 39729276827.

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

It can be written as a sum of positive squares in 2 ways, for example, as 22954371049 + 49912921744 = 151507^2 + 223412^2 .

It is a cyclic number.

It is not a de Polignac number, because 72867292793 - 2²⁸ = 72598857337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72867292723) 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, 687427238 + ... + 687427343.

It is an arithmetic number, because the mean of its divisors is an integer number (18560536857).

Almost surely, 2^72867292793 is an apocalyptic number.

It is an amenable number.

72867292793 is a deficient number, since it is larger than the sum of its proper divisors (1374854635).

72867292793 is a wasteful number, since it uses less digits than its factorization.

72867292793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1374854634.

The product of its digits is 32006016, while the sum is 62.

The spelling of 72867292793 in words is "seventy-two billion, eight hundred sixty-seven million, two hundred ninety-two thousand, seven hundred ninety-three".