128783814814 has 16 divisors (see below), whose sum is σ = 197914597776. Its totient is φ = 62812715200.

The previous prime is 128783814799. The next prime is 128783814827. The reversal of 128783814814 is 418418387821.

It is a congruent number.

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, 511929 + ... + 720859.

It is an arithmetic number, because the mean of its divisors is an integer number (12369662361).

Almost surely, 2^128783814814 is an apocalyptic number.

128783814814 is a deficient number, since it is larger than the sum of its proper divisors (69130782962).

128783814814 is a wasteful number, since it uses less digits than its factorization.

128783814814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216491.

The product of its digits is 2752512, while the sum is 55.

The spelling of 128783814814 in words is "one hundred twenty-eight billion, seven hundred eighty-three million, eight hundred fourteen thousand, eight hundred fourteen".