5621536765 has 8 divisors (see below), whose sum is σ = 7264755288. Its totient is φ = 4151288640.

The previous prime is 5621536751. The next prime is 5621536771. The reversal of 5621536765 is 5676351265.

It can be written as a sum of positive squares in 4 ways, for example, as 144648729 + 5476888036 = 12027^2 + 74006^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5621536765 - 2⁹ = 5621536253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43242526 + ... + 43242655.

It is an arithmetic number, because the mean of its divisors is an integer number (908094411).

Almost surely, 2^5621536765 is an apocalyptic number.

It is an amenable number.

5621536765 is a deficient number, since it is larger than the sum of its proper divisors (1643218523).

5621536765 is a wasteful number, since it uses less digits than its factorization.

5621536765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86485199.

The product of its digits is 1134000, while the sum is 46.

The square root of 5621536765 is about 74976.9082117955. The cubic root of 5621536765 is about 1778.0815889464.

The spelling of 5621536765 in words is "five billion, six hundred twenty-one million, five hundred thirty-six thousand, seven hundred sixty-five".