8128904966 has 16 divisors (see below), whose sum is σ = 15007209504. Its totient is φ = 3215830464.

The previous prime is 8128904951. The next prime is 8128904981. The reversal of 8128904966 is 6694098218.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8128904951) and next prime (8128904981).

It is a super-2 number, since 2×8128904966² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

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, 22331975 + ... + 22332338.

It is an arithmetic number, because the mean of its divisors is an integer number (937950594).

Almost surely, 2^8128904966 is an apocalyptic number.

8128904966 is a deficient number, since it is larger than the sum of its proper divisors (6878304538).

8128904966 is a wasteful number, since it uses less digits than its factorization.

8128904966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44664335.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The square root of 8128904966 is about 90160.4401386772. The cubic root of 8128904966 is about 2010.6848953505.

The spelling of 8128904966 in words is "eight billion, one hundred twenty-eight million, nine hundred four thousand, nine hundred sixty-six".