2115664312 has 16 divisors (see below), whose sum is σ = 3967941600. Its totient is φ = 1057546560.

The previous prime is 2115664283. The next prime is 2115664363. The reversal of 2115664312 is 2134665112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2389 + ... + 65092.

It is an arithmetic number, because the mean of its divisors is an integer number (247996350).

Almost surely, 2^2115664312 is an apocalyptic number.

It is an amenable number.

2115664312 is a deficient number, since it is larger than the sum of its proper divisors (1852277288).

2115664312 is a wasteful number, since it uses less digits than its factorization.

2115664312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71406 (or 71402 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 2115664312 is about 45996.3510726666. The cubic root of 2115664312 is about 1283.7553112728.

The spelling of 2115664312 in words is "two billion, one hundred fifteen million, six hundred sixty-four thousand, three hundred twelve".