77763705476665 has 16 divisors (see below), whose sum is σ = 105783826075200. Its totient is φ = 54403110551232.

The previous prime is 77763705476659. The next prime is 77763705476747. The reversal of 77763705476665 is 56667450736777.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 77763705476665 - 2⁷ = 77763705476537 is a prime.

It is a super-2 number, since 2×77763705476665² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 77763705476591 and 77763705476600.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31483280335 + ... + 31483282804.

It is an arithmetic number, because the mean of its divisors is an integer number (6611489129700).

Almost surely, 2^{77763705476665} is an apocalyptic number.

It is an amenable number.

77763705476665 is a deficient number, since it is larger than the sum of its proper divisors (28020120598535).

77763705476665 is a wasteful number, since it uses less digits than its factorization.

77763705476665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62966563176.

The product of its (nonzero) digits is 6534561600, while the sum is 76.

The spelling of 77763705476665 in words is "seventy-seven trillion, seven hundred sixty-three billion, seven hundred five million, four hundred seventy-six thousand, six hundred sixty-five".