2128426655 has 16 divisors (see below), whose sum is σ = 2580501504. Its totient is φ = 1685214720.

The previous prime is 2128426649. The next prime is 2128426661. The reversal of 2128426655 is 5566248212.

It is an interprime number because it is at equal distance from previous prime (2128426649) and next prime (2128426661).

It is not a de Polignac number, because 2128426655 - 2²⁴ = 2111649439 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 271085 + ... + 278825.

It is an arithmetic number, because the mean of its divisors is an integer number (161281344).

Almost surely, 2^2128426655 is an apocalyptic number.

2128426655 is a deficient number, since it is larger than the sum of its proper divisors (452074849).

2128426655 is a wasteful number, since it uses less digits than its factorization.

2128426655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306.

The product of its digits is 230400, while the sum is 41.

The square root of 2128426655 is about 46134.8746069608. The cubic root of 2128426655 is about 1286.3314747937.

The spelling of 2128426655 in words is "two billion, one hundred twenty-eight million, four hundred twenty-six thousand, six hundred fifty-five".