72356524469 has 2 divisors, whose sum is σ = 72356524470. Its totient is φ = 72356524468.

The previous prime is 72356524421. The next prime is 72356524477. The reversal of 72356524469 is 96442565327.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52859987569 + 19496536900 = 229913^2 + 139630^2 .

It is a cyclic number.

It is not a de Polignac number, because 72356524469 - 2²⁰ = 72355475893 is a prime.

It is a super-2 number, since 2×72356524469² (a number of 23 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 72356524469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72356520469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36178262234 + 36178262235.

It is an arithmetic number, because the mean of its divisors is an integer number (36178262235).

Almost surely, 2^72356524469 is an apocalyptic number.

It is an amenable number.

72356524469 is a deficient number, since it is larger than the sum of its proper divisors (1).

72356524469 is an equidigital number, since it uses as much as digits as its factorization.

72356524469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10886400, while the sum is 53.

The spelling of 72356524469 in words is "seventy-two billion, three hundred fifty-six million, five hundred twenty-four thousand, four hundred sixty-nine".