80128977 has 8 divisors (see below), whose sum is σ = 107004864. Its totient is φ = 53336208.

The previous prime is 80128969. The next prime is 80128981. The reversal of 80128977 is 77982108.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 80128977 - 2³ = 80128969 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80128907) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18493 + ... + 22410.

It is an arithmetic number, because the mean of its divisors is an integer number (13375608).

Almost surely, 2^80128977 is an apocalyptic number.

It is an amenable number.

80128977 is a deficient number, since it is larger than the sum of its proper divisors (26875887).

80128977 is a wasteful number, since it uses less digits than its factorization.

80128977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41559.

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 80128977 is about 8951.4790398012. The cubic root of 80128977 is about 431.1183741120.

The spelling of 80128977 in words is "eighty million, one hundred twenty-eight thousand, nine hundred seventy-seven".