7766421530066 has 64 divisors (see below), whose sum is σ = 12698135838720. Its totient is φ = 3548471942400.

The previous prime is 7766421530029. The next prime is 7766421530093. The reversal of 7766421530066 is 6600351246677.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 179262755 + ... + 179306073.

It is an arithmetic number, because the mean of its divisors is an integer number (198408372480).

Almost surely, 2^{7766421530066} is an apocalyptic number.

7766421530066 is a deficient number, since it is larger than the sum of its proper divisors (4931714308654).

7766421530066 is a wasteful number, since it uses less digits than its factorization.

7766421530066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44279.

The product of its (nonzero) digits is 7620480, while the sum is 53.

The spelling of 7766421530066 in words is "seven trillion, seven hundred sixty-six billion, four hundred twenty-one million, five hundred thirty thousand, sixty-six".