5651844641 has 4 divisors (see below), whose sum is σ = 5683070484. Its totient is φ = 5620618800.

The previous prime is 5651844521. The next prime is 5651844689. The reversal of 5651844641 is 1464481565.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1464481565 = 5 ⋅292896313.

It can be written as a sum of positive squares in 2 ways, for example, as 38688400 + 5613156241 = 6220^2 + 74921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5651844641 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5651844592 and 5651844601.

It is not an unprimeable number, because it can be changed into a prime (5651864641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15612650 + ... + 15613011.

It is an arithmetic number, because the mean of its divisors is an integer number (1420767621).

Almost surely, 2^5651844641 is an apocalyptic number.

It is an amenable number.

5651844641 is a deficient number, since it is larger than the sum of its proper divisors (31225843).

5651844641 is a wasteful number, since it uses less digits than its factorization.

5651844641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31225842.

The product of its digits is 460800, while the sum is 44.

The square root of 5651844641 is about 75178.7512599139. The cubic root of 5651844641 is about 1781.2713050067.

The spelling of 5651844641 in words is "five billion, six hundred fifty-one million, eight hundred forty-four thousand, six hundred forty-one".