77788668451823 has 8 divisors (see below), whose sum is σ = 88924089777792. Its totient is φ = 66658935726936.

The previous prime is 77788668451811. The next prime is 77788668451829. The reversal of 77788668451823 is 32815486688777.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77788668451823 - 2⁶ = 77788668451759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77788668451829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1422120965 + ... + 1422175662.

It is an arithmetic number, because the mean of its divisors is an integer number (11115511222224).

Almost surely, 2^{77788668451823} is an apocalyptic number.

77788668451823 is a deficient number, since it is larger than the sum of its proper divisors (11135421325969).

77788668451823 is a wasteful number, since it uses less digits than its factorization.

77788668451823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2844300541.

The product of its digits is 6069288960, while the sum is 80.

The spelling of 77788668451823 in words is "seventy-seven trillion, seven hundred eighty-eight billion, six hundred sixty-eight million, four hundred fifty-one thousand, eight hundred twenty-three".