128046477218 has 16 divisors (see below), whose sum is σ = 209591474400. Its totient is φ = 58186034400.

The previous prime is 128046477173. The next prime is 128046477259. The reversal of 128046477218 is 812774640821.

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, 767888 + ... + 919643.

It is an arithmetic number, because the mean of its divisors is an integer number (13099467150).

Almost surely, 2^128046477218 is an apocalyptic number.

128046477218 is a deficient number, since it is larger than the sum of its proper divisors (81544997182).

128046477218 is a wasteful number, since it uses less digits than its factorization.

128046477218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690993.

The product of its (nonzero) digits is 1204224, while the sum is 50.

The spelling of 128046477218 in words is "one hundred twenty-eight billion, forty-six million, four hundred seventy-seven thousand, two hundred eighteen".