72715065139 has 2 divisors, whose sum is σ = 72715065140. Its totient is φ = 72715065138.

The previous prime is 72715065121. The next prime is 72715065149. The reversal of 72715065139 is 93156051727.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 72715065139 - 2²³ = 72706676531 is a prime.

It is not a weakly prime, because it can be changed into another prime (72715065109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36357532569 + 36357532570.

It is an arithmetic number, because the mean of its divisors is an integer number (36357532570).

Almost surely, 2^72715065139 is an apocalyptic number.

72715065139 is a deficient number, since it is larger than the sum of its proper divisors (1).

72715065139 is an equidigital number, since it uses as much as digits as its factorization.

72715065139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 396900, while the sum is 46.

The spelling of 72715065139 in words is "seventy-two billion, seven hundred fifteen million, sixty-five thousand, one hundred thirty-nine".