128893026394 has 16 divisors (see below), whose sum is σ = 214490708640. Its totient is φ = 57594726160.

The previous prime is 128893026377. The next prime is 128893026499. The reversal of 128893026394 is 493620398821.

It is a super-2 number, since 2×128893026394² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49649329 + ... + 49651924.

It is an arithmetic number, because the mean of its divisors is an integer number (13405669290).

Almost surely, 2^128893026394 is an apocalyptic number.

128893026394 is a deficient number, since it is larger than the sum of its proper divisors (85597682246).

128893026394 is a wasteful number, since it uses less digits than its factorization.

128893026394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99301325.

The product of its (nonzero) digits is 4478976, while the sum is 55.

The spelling of 128893026394 in words is "one hundred twenty-eight billion, eight hundred ninety-three million, twenty-six thousand, three hundred ninety-four".