2051656716 has 12 divisors (see below), whose sum is σ = 4787199032. Its totient is φ = 683885568.

The previous prime is 2051656699. The next prime is 2051656729. The reversal of 2051656716 is 6176561502.

It is a tau number, because it is divible by the number of its divisors (12).

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, 85485685 + ... + 85485708.

Almost surely, 2^2051656716 is an apocalyptic number.

It is an amenable number.

2051656716 is an abundant number, since it is smaller than the sum of its proper divisors (2735542316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2051656716 is a wasteful number, since it uses less digits than its factorization.

2051656716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170971400 (or 170971398 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 2051656716 is about 45295.2173634259. The cubic root of 2051656716 is about 1270.6762092162.

The spelling of 2051656716 in words is "two billion, fifty-one million, six hundred fifty-six thousand, seven hundred sixteen".