72454764524081 has 2 divisors, whose sum is σ = 72454764524082. Its totient is φ = 72454764524080.

The previous prime is 72454764524071. The next prime is 72454764524159. The reversal of 72454764524081 is 18042546745427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64483967496481 + 7970797027600 = 8030191^2 + 2823260^2 .

It is a cyclic number.

It is not a de Polignac number, because 72454764524081 - 2¹⁸ = 72454764261937 is a prime.

It is a super-2 number, since 2×72454764524081² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72454764524081.

It is not a weakly prime, because it can be changed into another prime (72454764524071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36227382262040 + 36227382262041.

It is an arithmetic number, because the mean of its divisors is an integer number (36227382262041).

Almost surely, 2^{72454764524081} is an apocalyptic number.

It is an amenable number.

72454764524081 is a deficient number, since it is larger than the sum of its proper divisors (1).

72454764524081 is an equidigital number, since it uses as much as digits as its factorization.

72454764524081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60211200, while the sum is 59.

The spelling of 72454764524081 in words is "seventy-two trillion, four hundred fifty-four billion, seven hundred sixty-four million, five hundred twenty-four thousand, eighty-one".