128108623564 has 12 divisors (see below), whose sum is σ = 231422029888. Its totient is φ = 61988043600.

The previous prime is 128108623543. The next prime is 128108623589. The reversal of 128108623564 is 465326801821.

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, 516566907 + ... + 516567154.

Almost surely, 2^128108623564 is an apocalyptic number.

It is an amenable number.

128108623564 is a deficient number, since it is larger than the sum of its proper divisors (103313406324).

128108623564 is a wasteful number, since it uses less digits than its factorization.

128108623564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033134096 (or 1033134094 counting only the distinct ones).

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 128108623564 in words is "one hundred twenty-eight billion, one hundred eight million, six hundred twenty-three thousand, five hundred sixty-four".