72127056791 has 2 divisors, whose sum is σ = 72127056792. Its totient is φ = 72127056790.

The previous prime is 72127056767. The next prime is 72127056809. The reversal of 72127056791 is 19765072127.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72127056791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72127056721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36063528395 + 36063528396.

It is an arithmetic number, because the mean of its divisors is an integer number (36063528396).

Almost surely, 2^72127056791 is an apocalyptic number.

72127056791 is a deficient number, since it is larger than the sum of its proper divisors (1).

72127056791 is an equidigital number, since it uses as much as digits as its factorization.

72127056791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 370440, while the sum is 47.

The spelling of 72127056791 in words is "seventy-two billion, one hundred twenty-seven million, fifty-six thousand, seven hundred ninety-one".