2115651016 has 8 divisors (see below), whose sum is σ = 3966845670. Its totient is φ = 1057825504.

The previous prime is 2115650981. The next prime is 2115651053. The reversal of 2115651016 is 6101565112.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2111770116 + 3880900 = 45954^2 + 1970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132228181 + ... + 132228196.

Almost surely, 2^2115651016 is an apocalyptic number.

It is an amenable number.

2115651016 is a deficient number, since it is larger than the sum of its proper divisors (1851194654).

2115651016 is a wasteful number, since it uses less digits than its factorization.

2115651016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264456383 (or 264456379 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 28.

The square root of 2115651016 is about 45996.2065392354. The cubic root of 2115651016 is about 1283.7526219920.

The spelling of 2115651016 in words is "two billion, one hundred fifteen million, six hundred fifty-one thousand, sixteen".