72115061161139 has 2 divisors, whose sum is σ = 72115061161140. Its totient is φ = 72115061161138.

The previous prime is 72115061161123. The next prime is 72115061161223. The reversal of 72115061161139 is 93116116051127.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72115061161139 - 2⁴ = 72115061161123 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72115061161139.

It is not a weakly prime, because it can be changed into another prime (72115061161439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36057530580569 + 36057530580570.

It is an arithmetic number, because the mean of its divisors is an integer number (36057530580570).

Almost surely, 2^{72115061161139} is an apocalyptic number.

72115061161139 is a deficient number, since it is larger than the sum of its proper divisors (1).

72115061161139 is an equidigital number, since it uses as much as digits as its factorization.

72115061161139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 68040, while the sum is 44.

The spelling of 72115061161139 in words is "seventy-two trillion, one hundred fifteen billion, sixty-one million, one hundred sixty-one thousand, one hundred thirty-nine".