77133087977 has 12 divisors (see below), whose sum is σ = 84896857920. Its totient is φ = 70026531960.

The previous prime is 77133087929. The next prime is 77133088073. The reversal of 77133087977 is 77978033177.

It is a happy number.

It is not a de Polignac number, because 77133087977 - 2¹⁶ = 77133022441 is a prime.

It is a hoax number, since the sum of its digits (59) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77133083977) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 339077 + ... + 518882.

It is an arithmetic number, because the mean of its divisors is an integer number (7074738160).

Almost surely, 2^77133087977 is an apocalyptic number.

It is an amenable number.

77133087977 is a deficient number, since it is larger than the sum of its proper divisors (7763769943).

77133087977 is a wasteful number, since it uses less digits than its factorization.

77133087977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858724 (or 858713 counting only the distinct ones).

The product of its (nonzero) digits is 10890936, while the sum is 59.

The spelling of 77133087977 in words is "seventy-seven billion, one hundred thirty-three million, eighty-seven thousand, nine hundred seventy-seven".