128632739069 has 2 divisors, whose sum is σ = 128632739070. Its totient is φ = 128632739068.

The previous prime is 128632739063. The next prime is 128632739099. The reversal of 128632739069 is 960937236821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 86016091225 + 42616647844 = 293285^2 + 206438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128632739069 is a prime.

It is a super-2 number, since 2×128632739069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (128632739063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64316369534 + 64316369535.

It is an arithmetic number, because the mean of its divisors is an integer number (64316369535).

Almost surely, 2^128632739069 is an apocalyptic number.

It is an amenable number.

128632739069 is a deficient number, since it is larger than the sum of its proper divisors (1).

128632739069 is an equidigital number, since it uses as much as digits as its factorization.

128632739069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5878656, while the sum is 56.

The spelling of 128632739069 in words is "one hundred twenty-eight billion, six hundred thirty-two million, seven hundred thirty-nine thousand, sixty-nine".