128886432601 has 2 divisors, whose sum is σ = 128886432602. Its totient is φ = 128886432600.

The previous prime is 128886432583. The next prime is 128886432617. The reversal of 128886432601 is 106234688821.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 110519678025 + 18366754576 = 332445^2 + 135524^2 .

It is a cyclic number.

It is not a de Polignac number, because 128886432601 - 2⁹ = 128886432089 is a prime.

It is a super-2 number, since 2×128886432601² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (128886433601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64443216300 + 64443216301.

It is an arithmetic number, because the mean of its divisors is an integer number (64443216301).

Almost surely, 2^128886432601 is an apocalyptic number.

It is an amenable number.

128886432601 is a deficient number, since it is larger than the sum of its proper divisors (1).

128886432601 is an equidigital number, since it uses as much as digits as its factorization.

128886432601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 884736, while the sum is 49.

The spelling of 128886432601 in words is "one hundred twenty-eight billion, eight hundred eighty-six million, four hundred thirty-two thousand, six hundred one".