72560166431 has 2 divisors, whose sum is σ = 72560166432. Its totient is φ = 72560166430.

The previous prime is 72560166409. The next prime is 72560166439. The reversal of 72560166431 is 13466106527.

It is a strong prime.

It is an emirp because it is prime and its reverse (13466106527) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72560166431 is a prime.

It is a super-2 number, since 2×72560166431² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72560166439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36280083215 + 36280083216.

It is an arithmetic number, because the mean of its divisors is an integer number (36280083216).

Almost surely, 2^72560166431 is an apocalyptic number.

72560166431 is a deficient number, since it is larger than the sum of its proper divisors (1).

72560166431 is an equidigital number, since it uses as much as digits as its factorization.

72560166431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 72560166431 in words is "seventy-two billion, five hundred sixty million, one hundred sixty-six thousand, four hundred thirty-one".