77764032405087 has 32 divisors (see below), whose sum is σ = 119024328503808. Its totient is φ = 44239114983936.

The previous prime is 77764032405023. The next prime is 77764032405107. The reversal of 77764032405087 is 78050423046777.

It is not a de Polignac number, because 77764032405087 - 2⁶ = 77764032405023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77764032405087.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77764032405187) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30901963 + ... + 33323555.

It is an arithmetic number, because the mean of its divisors is an integer number (3719510265744).

Almost surely, 2^{77764032405087} is an apocalyptic number.

77764032405087 is a deficient number, since it is larger than the sum of its proper divisors (41260296098721).

77764032405087 is a wasteful number, since it uses less digits than its factorization.

77764032405087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2428399.

The product of its (nonzero) digits is 55319040, while the sum is 60.

The spelling of 77764032405087 in words is "seventy-seven trillion, seven hundred sixty-four billion, thirty-two million, four hundred five thousand, eighty-seven".