7666379081 has 8 divisors (see below), whose sum is σ = 7915372800. Its totient is φ = 7417491120.

The previous prime is 7666379059. The next prime is 7666379089. The reversal of 7666379081 is 1809736667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7666379081 is a prime.

It is a super-2 number, since 2×7666379081² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7666379089) by changing a digit.

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, 137030 + ... + 184688.

It is an arithmetic number, because the mean of its divisors is an integer number (989421600).

Almost surely, 2^7666379081 is an apocalyptic number.

It is an amenable number.

7666379081 is a deficient number, since it is larger than the sum of its proper divisors (248993719).

7666379081 is a wasteful number, since it uses less digits than its factorization.

7666379081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52879.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The square root of 7666379081 is about 87557.8613318073. The cubic root of 7666379081 is about 1971.8025777405.

The spelling of 7666379081 in words is "seven billion, six hundred sixty-six million, three hundred seventy-nine thousand, eighty-one".