72267741737831 has 2 divisors, whose sum is σ = 72267741737832. Its totient is φ = 72267741737830.

The previous prime is 72267741737677. The next prime is 72267741737857. The reversal of 72267741737831 is 13873714776227.

It is a strong prime.

It is an emirp because it is prime and its reverse (13873714776227) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72267741737831 is a prime.

It is a super-2 number, since 2×72267741737831² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72267741737531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36133870868915 + 36133870868916.

It is an arithmetic number, because the mean of its divisors is an integer number (36133870868916).

Almost surely, 2^{72267741737831} is an apocalyptic number.

72267741737831 is a deficient number, since it is larger than the sum of its proper divisors (1).

72267741737831 is an equidigital number, since it uses as much as digits as its factorization.

72267741737831 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116169984, while the sum is 65.

The spelling of 72267741737831 in words is "seventy-two trillion, two hundred sixty-seven billion, seven hundred forty-one million, seven hundred thirty-seven thousand, eight hundred thirty-one".