8140963666 has 32 divisors (see below), whose sum is σ = 13911118848. Its totient is φ = 3536916240.

The previous prime is 8140963651. The next prime is 8140963703. The reversal of 8140963666 is 6663690418.

It is a super-2 number, since 2×8140963666² (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 15 ways as a sum of consecutive naturals, for example, 775545 + ... + 785971.

It is an arithmetic number, because the mean of its divisors is an integer number (434722464).

Almost surely, 2^8140963666 is an apocalyptic number.

8140963666 is a deficient number, since it is larger than the sum of its proper divisors (5770155182).

8140963666 is a wasteful number, since it uses less digits than its factorization.

8140963666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12006.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The square root of 8140963666 is about 90227.2889208138. The cubic root of 8140963666 is about 2011.6786440648.

The spelling of 8140963666 in words is "eight billion, one hundred forty million, nine hundred sixty-three thousand, six hundred sixty-six".