5536421665 has 16 divisors (see below), whose sum is σ = 6755570640. Its totient is φ = 4355112960.

The previous prime is 5536421659. The next prime is 5536421677. The reversal of 5536421665 is 5661246355.

It can be written as a sum of positive squares in 8 ways, for example, as 2172305664 + 3364116001 = 46608^2 + 58001^2 .

It is not a de Polignac number, because 5536421665 - 2⁷ = 5536421537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46177 + ... + 114913.

It is an arithmetic number, because the mean of its divisors is an integer number (422223165).

Almost surely, 2^5536421665 is an apocalyptic number.

It is an amenable number.

5536421665 is a deficient number, since it is larger than the sum of its proper divisors (1219148975).

5536421665 is a wasteful number, since it uses less digits than its factorization.

5536421665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69012.

The product of its digits is 648000, while the sum is 43.

The square root of 5536421665 is about 74407.1345033526. The cubic root of 5536421665 is about 1769.0619972790.

The spelling of 5536421665 in words is "five billion, five hundred thirty-six million, four hundred twenty-one thousand, six hundred sixty-five".