128102072971 has 2 divisors, whose sum is σ = 128102072972. Its totient is φ = 128102072970.

The previous prime is 128102072953. The next prime is 128102072983. The reversal of 128102072971 is 179270201821.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128102072971 - 2⁵ = 128102072939 is a prime.

It is not a weakly prime, because it can be changed into another prime (128102072921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64051036485 + 64051036486.

It is an arithmetic number, because the mean of its divisors is an integer number (64051036486).

Almost surely, 2^128102072971 is an apocalyptic number.

128102072971 is a deficient number, since it is larger than the sum of its proper divisors (1).

128102072971 is an equidigital number, since it uses as much as digits as its factorization.

128102072971 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 128102072971 in words is "one hundred twenty-eight billion, one hundred two million, seventy-two thousand, nine hundred seventy-one".