2051696961 has 6 divisors (see below), whose sum is σ = 2963562290. Its totient is φ = 1367797968.

The previous prime is 2051696951. The next prime is 2051696971. The reversal of 2051696961 is 1696961502.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2051696951) and next prime (2051696971).

It can be written as a sum of positive squares in only one way, i.e., 1913187600 + 138509361 = 43740^2 + 11769^2 .

It is not a de Polignac number, because 2051696961 - 2⁵ = 2051696929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2051696921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 113983156 + ... + 113983173.

Almost surely, 2^2051696961 is an apocalyptic number.

It is an amenable number.

2051696961 is a deficient number, since it is larger than the sum of its proper divisors (911865329).

2051696961 is a wasteful number, since it uses less digits than its factorization.

2051696961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227966335 (or 227966332 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

The square root of 2051696961 is about 45295.6616134481. The cubic root of 2051696961 is about 1270.6845176285.

The spelling of 2051696961 in words is "two billion, fifty-one million, six hundred ninety-six thousand, nine hundred sixty-one".