72949082831 has 2 divisors, whose sum is σ = 72949082832. Its totient is φ = 72949082830.

The previous prime is 72949082813. The next prime is 72949082839. The reversal of 72949082831 is 13828094927.

Together with previous prime (72949082813) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is an emirp because it is prime and its reverse (13828094927) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72949082831 is a prime.

It is a super-2 number, since 2×72949082831² (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 (72949082839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36474541415 + 36474541416.

It is an arithmetic number, because the mean of its divisors is an integer number (36474541416).

Almost surely, 2^72949082831 is an apocalyptic number.

72949082831 is a deficient number, since it is larger than the sum of its proper divisors (1).

72949082831 is an equidigital number, since it uses as much as digits as its factorization.

72949082831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 72949082831 in words is "seventy-two billion, nine hundred forty-nine million, eighty-two thousand, eight hundred thirty-one".