77123076687 has 12 divisors (see below), whose sum is σ = 111439110744. Its totient is φ = 51397333200.

The previous prime is 77123076661. The next prime is 77123076697. The reversal of 77123076687 is 78667032177.

It is not a de Polignac number, because 77123076687 - 2²⁷ = 76988858959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77123076697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1477188 + ... + 1528505.

It is an arithmetic number, because the mean of its divisors is an integer number (9286592562).

Almost surely, 2^77123076687 is an apocalyptic number.

77123076687 is a deficient number, since it is larger than the sum of its proper divisors (34316034057).

77123076687 is a wasteful number, since it uses less digits than its factorization.

77123076687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008550 (or 3008547 counting only the distinct ones).

The product of its (nonzero) digits is 4148928, while the sum is 54.

The spelling of 77123076687 in words is "seventy-seven billion, one hundred twenty-three million, seventy-six thousand, six hundred eighty-seven".