7766666536 has 16 divisors (see below), whose sum is σ = 14901163200. Its totient is φ = 3793023024.

The previous prime is 7766666527. The next prime is 7766666549. The reversal of 7766666536 is 6356666677.

It is a super-2 number, since 2×7766666536² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11288416 + ... + 11289103.

It is an arithmetic number, because the mean of its divisors is an integer number (931322700).

Almost surely, 2^7766666536 is an apocalyptic number.

It is an amenable number.

7766666536 is a deficient number, since it is larger than the sum of its proper divisors (7134496664).

7766666536 is a wasteful number, since it uses less digits than its factorization.

7766666536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22577568 (or 22577564 counting only the distinct ones).

The product of its digits is 34292160, while the sum is 58.

The square root of 7766666536 is about 88128.6930346751. The cubic root of 7766666536 is about 1980.3633771738.

The spelling of 7766666536 in words is "seven billion, seven hundred sixty-six million, six hundred sixty-six thousand, five hundred thirty-six".