72994454841523 has 2 divisors, whose sum is σ = 72994454841524. Its totient is φ = 72994454841522.

The previous prime is 72994454841491. The next prime is 72994454841541. The reversal of 72994454841523 is 32514845449927.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72994454841523 - 2⁵ = 72994454841491 is a prime.

It is a super-2 number, since 2×72994454841523² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (72994454871523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36497227420761 + 36497227420762.

It is an arithmetic number, because the mean of its divisors is an integer number (36497227420762).

Almost surely, 2^{72994454841523} is an apocalyptic number.

72994454841523 is a deficient number, since it is larger than the sum of its proper divisors (1).

72994454841523 is an equidigital number, since it uses as much as digits as its factorization.

72994454841523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 348364800, while the sum is 67.

The spelling of 72994454841523 in words is "seventy-two trillion, nine hundred ninety-four billion, four hundred fifty-four million, eight hundred forty-one thousand, five hundred twenty-three".