72472333993 has 2 divisors, whose sum is σ = 72472333994. Its totient is φ = 72472333992.

The previous prime is 72472333987. The next prime is 72472334021. The reversal of 72472333993 is 39933327427.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68292323584 + 4180010409 = 261328^2 + 64653^2 .

It is a cyclic number.

It is not a de Polignac number, because 72472333993 - 2¹⁷ = 72472202921 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72472333993.

It is not a weakly prime, because it can be changed into another prime (72472333903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36236166996 + 36236166997.

It is an arithmetic number, because the mean of its divisors is an integer number (36236166997).

Almost surely, 2^72472333993 is an apocalyptic number.

It is an amenable number.

72472333993 is a deficient number, since it is larger than the sum of its proper divisors (1).

72472333993 is an equidigital number, since it uses as much as digits as its factorization.

72472333993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5143824, while the sum is 52.

The spelling of 72472333993 in words is "seventy-two billion, four hundred seventy-two million, three hundred thirty-three thousand, nine hundred ninety-three".