128506426355 has 16 divisors (see below), whose sum is σ = 155836008000. Its totient is φ = 101720937600.

The previous prime is 128506426331. The next prime is 128506426381. The reversal of 128506426355 is 553624605821.

It is not a de Polignac number, because 128506426355 - 2²² = 128502232051 is a prime.

It is a super-2 number, since 2×128506426355² (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 15 ways as a sum of consecutive naturals, for example, 700106 + ... + 864384.

It is an arithmetic number, because the mean of its divisors is an integer number (9739750500).

Almost surely, 2^128506426355 is an apocalyptic number.

128506426355 is a deficient number, since it is larger than the sum of its proper divisors (27329581645).

128506426355 is a wasteful number, since it uses less digits than its factorization.

128506426355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165934.

The product of its (nonzero) digits is 1728000, while the sum is 47.

The spelling of 128506426355 in words is "one hundred twenty-eight billion, five hundred six million, four hundred twenty-six thousand, three hundred fifty-five".