77763705476568 has 64 divisors (see below), whose sum is σ = 194838691676160. Its totient is φ = 25863983582976.

The previous prime is 77763705476563. The next prime is 77763705476579. The reversal of 77763705476568 is 86567450736777.

It is a junction number, because it is equal to n+sod(n) for n = 77763705476493 and 77763705476502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77763705476563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242270121 + ... + 242590887.

It is an arithmetic number, because the mean of its divisors is an integer number (3044354557440).

Almost surely, 2^{77763705476568} is an apocalyptic number.

It is an amenable number.

77763705476568 is an abundant number, since it is smaller than the sum of its proper divisors (117074986199592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

77763705476568 is a wasteful number, since it uses less digits than its factorization.

77763705476568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343056 (or 343052 counting only the distinct ones).

The product of its (nonzero) digits is 8712748800, while the sum is 78.

The spelling of 77763705476568 in words is "seventy-seven trillion, seven hundred sixty-three billion, seven hundred five million, four hundred seventy-six thousand, five hundred sixty-eight".