72992311493 has 2 divisors, whose sum is σ = 72992311494. Its totient is φ = 72992311492.

The previous prime is 72992311487. The next prime is 72992311501. The reversal of 72992311493 is 39411329927.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44856274849 + 28136036644 = 211793^2 + 167738^2 .

It is a cyclic number.

It is not a de Polignac number, because 72992311493 - 2⁶ = 72992311429 is a prime.

It is a super-2 number, since 2×72992311493² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72992311393) 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 as a sum of consecutive naturals, namely, 36496155746 + 36496155747.

It is an arithmetic number, because the mean of its divisors is an integer number (36496155747).

Almost surely, 2^72992311493 is an apocalyptic number.

It is an amenable number.

72992311493 is a deficient number, since it is larger than the sum of its proper divisors (1).

72992311493 is an equidigital number, since it uses as much as digits as its factorization.

72992311493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 50.

The spelling of 72992311493 in words is "seventy-two billion, nine hundred ninety-two million, three hundred eleven thousand, four hundred ninety-three".