8216669992 has 32 divisors (see below), whose sum is σ = 16129562400. Its totient is φ = 3918867904.

The previous prime is 8216669971. The next prime is 8216670013. The reversal of 8216669992 is 2999666128.

It is an interprime number because it is at equal distance from previous prime (8216669971) and next prime (8216670013).

It is a Harshad number since it is a multiple of its sum of digits (58).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194098 + ... + 232609.

It is an arithmetic number, because the mean of its divisors is an integer number (504048825).

Almost surely, 2^8216669992 is an apocalyptic number.

It is an amenable number.

8216669992 is a deficient number, since it is larger than the sum of its proper divisors (7912892408).

8216669992 is a wasteful number, since it uses less digits than its factorization.

8216669992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426825 (or 426821 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 58.

The square root of 8216669992 is about 90645.8492816963. The cubic root of 8216669992 is about 2017.8952353787.

The spelling of 8216669992 in words is "eight billion, two hundred sixteen million, six hundred sixty-nine thousand, nine hundred ninety-two".