128082901631 has 4 divisors (see below), whose sum is σ = 134824107000. Its totient is φ = 121341696264.

The previous prime is 128082901579. The next prime is 128082901673. The reversal of 128082901631 is 136109280821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128082901631 is a prime.

It is a super-2 number, since 2×128082901631² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128082906631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3370602656 + ... + 3370602693.

It is an arithmetic number, because the mean of its divisors is an integer number (33706026750).

Almost surely, 2^128082901631 is an apocalyptic number.

128082901631 is a deficient number, since it is larger than the sum of its proper divisors (6741205369).

128082901631 is an equidigital number, since it uses as much as digits as its factorization.

128082901631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6741205368.

The product of its (nonzero) digits is 41472, while the sum is 41.

The spelling of 128082901631 in words is "one hundred twenty-eight billion, eighty-two million, nine hundred one thousand, six hundred thirty-one".