72366050431 has 4 divisors (see below), whose sum is σ = 72448006072. Its totient is φ = 72284094792.

The previous prime is 72366050387. The next prime is 72366050441. The reversal of 72366050431 is 13405066327.

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 72366050431 - 2⁷ = 72366050303 is a prime.

It is a super-2 number, since 2×72366050431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72366050441) 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, 40976496 + ... + 40978261.

It is an arithmetic number, because the mean of its divisors is an integer number (18112001518).

Almost surely, 2^72366050431 is an apocalyptic number.

72366050431 is a deficient number, since it is larger than the sum of its proper divisors (81955641).

72366050431 is an equidigital number, since it uses as much as digits as its factorization.

72366050431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81955640.

The product of its (nonzero) digits is 90720, while the sum is 37.

The spelling of 72366050431 in words is "seventy-two billion, three hundred sixty-six million, fifty thousand, four hundred thirty-one".