128907384694 has 8 divisors (see below), whose sum is σ = 210939356808. Its totient is φ = 58594265760.

The previous prime is 128907384689. The next prime is 128907384701. The reversal of 128907384694 is 496483709821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×128907384694² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2929713267 + ... + 2929713310.

It is an arithmetic number, because the mean of its divisors is an integer number (26367419601).

Almost surely, 2^128907384694 is an apocalyptic number.

128907384694 is a deficient number, since it is larger than the sum of its proper divisors (82031972114).

128907384694 is a wasteful number, since it uses less digits than its factorization.

128907384694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5859426590.

The product of its (nonzero) digits is 20901888, while the sum is 61.

The spelling of 128907384694 in words is "one hundred twenty-eight billion, nine hundred seven million, three hundred eighty-four thousand, six hundred ninety-four".