128156797007 has 2 divisors, whose sum is σ = 128156797008. Its totient is φ = 128156797006.

The previous prime is 128156796997. The next prime is 128156797031. The reversal of 128156797007 is 700797651821.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 128156797007 - 2²² = 128152602703 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 128156797007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128156797207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64078398503 + 64078398504.

It is an arithmetic number, because the mean of its divisors is an integer number (64078398504).

Almost surely, 2^128156797007 is an apocalyptic number.

128156797007 is a deficient number, since it is larger than the sum of its proper divisors (1).

128156797007 is an equidigital number, since it uses as much as digits as its factorization.

128156797007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1481760, while the sum is 53.

The spelling of 128156797007 in words is "one hundred twenty-eight billion, one hundred fifty-six million, seven hundred ninety-seven thousand, seven".