76977473889 has 16 divisors (see below), whose sum is σ = 105977931264. Its totient is φ = 49648617600.

The previous prime is 76977473887. The next prime is 76977473921. The reversal of 76977473889 is 98837477967.

It is not a de Polignac number, because 76977473889 - 2¹ = 76977473887 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 76977473889.

It is not an unprimeable number, because it can be changed into a prime (76977473887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 211429 + ... + 445709.

It is an arithmetic number, because the mean of its divisors is an integer number (6623620704).

Almost surely, 2^76977473889 is an apocalyptic number.

It is an amenable number.

76977473889 is a deficient number, since it is larger than the sum of its proper divisors (29000457375).

76977473889 is a wasteful number, since it uses less digits than its factorization.

76977473889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237848.

The product of its digits is 896168448, while the sum is 75.

The spelling of 76977473889 in words is "seventy-six billion, nine hundred seventy-seven million, four hundred seventy-three thousand, eight hundred eighty-nine".