80128655 has 16 divisors (see below), whose sum is σ = 98582400. Its totient is φ = 62495232.

The previous prime is 80128627. The next prime is 80128691. The reversal of 80128655 is 55682108.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 80128655 - 2²⁶ = 13019791 is a prime.

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, 81527 + ... + 82503.

It is an arithmetic number, because the mean of its divisors is an integer number (6161400).

Almost surely, 2^80128655 is an apocalyptic number.

80128655 is a deficient number, since it is larger than the sum of its proper divisors (18453745).

80128655 is a wasteful number, since it uses less digits than its factorization.

80128655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378.

The product of its (nonzero) digits is 19200, while the sum is 35.

The square root of 80128655 is about 8951.4610539286. The cubic root of 80128655 is about 431.1177966251.

The spelling of 80128655 in words is "eighty million, one hundred twenty-eight thousand, six hundred fifty-five".