5651660650 has 48 divisors (see below), whose sum is σ = 10885787640. Its totient is φ = 2180460800.

The previous prime is 5651660647. The next prime is 5651660683. The reversal of 5651660650 is 560661565.

It can be written as a sum of positive squares in 12 ways, for example, as 941446489 + 4710214161 = 30683^2 + 68631^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2372460 + ... + 2374840.

Almost surely, 2^5651660650 is an apocalyptic number.

5651660650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5651660650 is a deficient number, since it is larger than the sum of its proper divisors (5234126990).

5651660650 is a wasteful number, since it uses less digits than its factorization.

5651660650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059 (or 4054 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 40.

The square root of 5651660650 is about 75177.5275597701. The cubic root of 5651660650 is about 1781.2519755390.

The spelling of 5651660650 in words is "five billion, six hundred fifty-one million, six hundred sixty thousand, six hundred fifty".