72561175999997 has 2 divisors, whose sum is σ = 72561175999998. Its totient is φ = 72561175999996.

The previous prime is 72561175999973. The next prime is 72561176000011. The reversal of 72561175999997 is 79999957116527.

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., 47447657427076 + 25113518572921 = 6888226^2 + 5011339^2 .

It is a cyclic number.

It is not a de Polignac number, because 72561175999997 - 2³⁰ = 72560102258173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72561175999927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36280587999998 + 36280587999999.

It is an arithmetic number, because the mean of its divisors is an integer number (36280587999999).

Almost surely, 2^{72561175999997} is an apocalyptic number.

It is an amenable number.

72561175999997 is a deficient number, since it is larger than the sum of its proper divisors (1).

72561175999997 is an equidigital number, since it uses as much as digits as its factorization.

72561175999997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6076142100, while the sum is 86.

The spelling of 72561175999997 in words is "seventy-two trillion, five hundred sixty-one billion, one hundred seventy-five million, nine hundred ninety-nine thousand, nine hundred ninety-seven".