7666109090 has 16 divisors (see below), whose sum is σ = 13802754240. Its totient is φ = 3065608560.

The previous prime is 7666109063. The next prime is 7666109107. The reversal of 7666109090 is 909016667.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65126 + ... + 139905.

It is an arithmetic number, because the mean of its divisors is an integer number (862672140).

Almost surely, 2^7666109090 is an apocalyptic number.

7666109090 is a deficient number, since it is larger than the sum of its proper divisors (6136645150).

7666109090 is a wasteful number, since it uses less digits than its factorization.

7666109090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208777.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 7666109090 is about 87556.3195320589. The cubic root of 7666109090 is about 1971.7794301244.

The spelling of 7666109090 in words is "seven billion, six hundred sixty-six million, one hundred nine thousand, ninety".