766555117564 has 6 divisors (see below), whose sum is σ = 1341471455744. Its totient is φ = 383277558780.

The previous prime is 766555117457. The next prime is 766555117621. The reversal of 766555117564 is 465711555667.

It is a super-2 number, since 2×766555117564² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 766555117499 and 766555117508.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95819389692 + ... + 95819389699.

Almost surely, 2^766555117564 is an apocalyptic number.

It is an amenable number.

766555117564 is a deficient number, since it is larger than the sum of its proper divisors (574916338180).

766555117564 is a wasteful number, since it uses less digits than its factorization.

766555117564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191638779395 (or 191638779393 counting only the distinct ones).

The product of its digits is 26460000, while the sum is 58.

The spelling of 766555117564 in words is "seven hundred sixty-six billion, five hundred fifty-five million, one hundred seventeen thousand, five hundred sixty-four".