72169056293 has 2 divisors, whose sum is σ = 72169056294. Its totient is φ = 72169056292.

The previous prime is 72169056259. The next prime is 72169056299. The reversal of 72169056293 is 39265096127.

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., 71301282529 + 867773764 = 267023^2 + 29458^2 .

It is an emirp because it is prime and its reverse (39265096127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72169056293 - 2⁶ = 72169056229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72169056299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36084528146 + 36084528147.

It is an arithmetic number, because the mean of its divisors is an integer number (36084528147).

Almost surely, 2^72169056293 is an apocalyptic number.

It is an amenable number.

72169056293 is a deficient number, since it is larger than the sum of its proper divisors (1).

72169056293 is an equidigital number, since it uses as much as digits as its factorization.

72169056293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 50.

The spelling of 72169056293 in words is "seventy-two billion, one hundred sixty-nine million, fifty-six thousand, two hundred ninety-three".