77056654788863 has 8 divisors (see below), whose sum is σ = 77503605212736. Its totient is φ = 76609722023200.

The previous prime is 77056654788859. The next prime is 77056654788901. The reversal of 77056654788863 is 36888745665077.

It is a Cunningham number, because it is equal to 8778192²-1.

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

It is a cyclic number.

It is not a de Polignac number, because 77056654788863 - 2² = 77056654788859 is a prime.

It is a super-2 number, since 2×77056654788863² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77056654788833) 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, 4389098 + ... + 13167288.

It is an arithmetic number, because the mean of its divisors is an integer number (9687950651592).

Almost surely, 2^{77056654788863} is an apocalyptic number.

77056654788863 is a deficient number, since it is larger than the sum of its proper divisors (446950423873).

77056654788863 is a wasteful number, since it uses less digits than its factorization.

77056654788863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8829105.

The product of its (nonzero) digits is 11379916800, while the sum is 80.

The spelling of 77056654788863 in words is "seventy-seven trillion, fifty-six billion, six hundred fifty-four million, seven hundred eighty-eight thousand, eight hundred sixty-three".