77734615646875 has 24 divisors (see below), whose sum is σ = 105994964544336. Its totient is φ = 56534265900000.

The previous prime is 77734615646773. The next prime is 77734615646879. The reversal of 77734615646875 is 57864651643777.

It is not a de Polignac number, because 77734615646875 - 2²⁵ = 77734582092443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77734615646879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1130650944 + ... + 1130719693.

It is an arithmetic number, because the mean of its divisors is an integer number (4416456856014).

Almost surely, 2^{77734615646875} is an apocalyptic number.

77734615646875 is a deficient number, since it is larger than the sum of its proper divisors (28260348897461).

77734615646875 is an equidigital number, since it uses as much as digits as its factorization.

77734615646875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261370673 (or 2261370653 counting only the distinct ones).

The product of its digits is 4978713600, while the sum is 76.

The spelling of 77734615646875 in words is "seventy-seven trillion, seven hundred thirty-four billion, six hundred fifteen million, six hundred forty-six thousand, eight hundred seventy-five".