5641661264 has 10 divisors (see below), whose sum is σ = 10930718730. Its totient is φ = 2820830624.

The previous prime is 5641661239. The next prime is 5641661269. The reversal of 5641661264 is 4621661465.

It can be written as a sum of positive squares in only one way, i.e., 5212840000 + 428821264 = 72200^2 + 20708^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5641661269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176301899 + ... + 176301930.

It is an arithmetic number, because the mean of its divisors is an integer number (1093071873).

Almost surely, 2^5641661264 is an apocalyptic number.

It is an amenable number.

5641661264 is a deficient number, since it is larger than the sum of its proper divisors (5289057466).

5641661264 is a wasteful number, since it uses less digits than its factorization.

5641661264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352603837 (or 352603831 counting only the distinct ones).

The product of its digits is 207360, while the sum is 41.

The square root of 5641661264 is about 75110.9929637467. The cubic root of 5641661264 is about 1780.2008425481.

The spelling of 5641661264 in words is "five billion, six hundred forty-one million, six hundred sixty-one thousand, two hundred sixty-four".