5651656065 has 32 divisors (see below), whose sum is σ = 10960790400. Its totient is φ = 2740196160.

The previous prime is 5651656061. The next prime is 5651656067. The reversal of 5651656065 is 5606561565.

It is not a de Polignac number, because 5651656065 - 2² = 5651656061 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5651656065.

It is not an unprimeable number, because it can be changed into a prime (5651656061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1901430 + ... + 1904399.

It is an arithmetic number, because the mean of its divisors is an integer number (342524700).

Almost surely, 2^5651656065 is an apocalyptic number.

5651656065 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

5651656065 is a deficient number, since it is larger than the sum of its proper divisors (5309134335).

5651656065 is a wasteful number, since it uses less digits than its factorization.

5651656065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3805854 (or 3805848 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 5651656065 is about 75177.4970652788. The cubic root of 5651656065 is about 1781.2514938492.

The spelling of 5651656065 in words is "five billion, six hundred fifty-one million, six hundred fifty-six thousand, sixty-five".