5651660651 has 24 divisors (see below), whose sum is σ = 7078498560. Its totient is φ = 4417691616.

The previous prime is 5651660647. The next prime is 5651660683. The reversal of 5651660651 is 1560661565.

It is not a de Polignac number, because 5651660651 - 2² = 5651660647 is a prime.

It is a super-2 number, since 2×5651660651² = 63882536228123487602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 5651660599 and 5651660608.

It is not an unprimeable number, because it can be changed into a prime (5651660051) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 69410 + ... + 126968.

It is an arithmetic number, because the mean of its divisors is an integer number (294937440).

Almost surely, 2^5651660651 is an apocalyptic number.

5651660651 is a deficient number, since it is larger than the sum of its proper divisors (1426837909).

5651660651 is a wasteful number, since it uses less digits than its factorization.

5651660651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57675 (or 57662 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 41.

The square root of 5651660651 is about 75177.5275664211. The cubic root of 5651660651 is about 1781.2519756441.

The spelling of 5651660651 in words is "five billion, six hundred fifty-one million, six hundred sixty thousand, six hundred fifty-one".