128358953694 has 32 divisors (see below), whose sum is σ = 288678781440. Its totient is φ = 42270818616.

The previous prime is 128358953683. The next prime is 128358953699. The reversal of 128358953694 is 496359853821.

128358953694 is a `hidden beast` number, since 1 + 2 + 8 + 3 + 5 + 8 + 9 + 536 + 94 = 666.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128358953699) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14314902 + ... + 14323865.

It is an arithmetic number, because the mean of its divisors is an integer number (9021211920).

Almost surely, 2^128358953694 is an apocalyptic number.

128358953694 is an abundant number, since it is smaller than the sum of its proper divisors (160319827746).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128358953694 is a wasteful number, since it uses less digits than its factorization.

128358953694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28638861 (or 28638855 counting only the distinct ones).

The product of its digits is 55987200, while the sum is 63.

The spelling of 128358953694 in words is "one hundred twenty-eight billion, three hundred fifty-eight million, nine hundred fifty-three thousand, six hundred ninety-four".