5661737863838 has 16 divisors (see below), whose sum is σ = 9709331484384. Its totient is φ = 2425585297920.

The previous prime is 5661737863829. The next prime is 5661737863841. The reversal of 5661737863838 is 8383687371665.

It is a Curzon 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, 72775283 + ... + 72853038.

It is an arithmetic number, because the mean of its divisors is an integer number (606833217774).

Almost surely, 2^{5661737863838} is an apocalyptic number.

5661737863838 is a deficient number, since it is larger than the sum of its proper divisors (4047593620546).

5661737863838 is a wasteful number, since it uses less digits than its factorization.

5661737863838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145631107.

The product of its digits is 731566080, while the sum is 71.

The spelling of 5661737863838 in words is "five trillion, six hundred sixty-one billion, seven hundred thirty-seven million, eight hundred sixty-three thousand, eight hundred thirty-eight".