5661737863837 has 32 divisors (see below), whose sum is σ = 6551513819136. Its totient is φ = 4841893636800.

The previous prime is 5661737863829. The next prime is 5661737863841. The reversal of 5661737863837 is 7383687371665.

It is not a de Polignac number, because 5661737863837 - 2³ = 5661737863829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661737863877) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142009968 + ... + 142049830.

It is an arithmetic number, because the mean of its divisors is an integer number (204734806848).

Almost surely, 2^{5661737863837} is an apocalyptic number.

It is an amenable number.

5661737863837 is a deficient number, since it is larger than the sum of its proper divisors (889775955299).

5661737863837 is a wasteful number, since it uses less digits than its factorization.

5661737863837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49161.

The product of its digits is 640120320, while the sum is 70.

The spelling of 5661737863837 in words is "five trillion, six hundred sixty-one billion, seven hundred thirty-seven million, eight hundred sixty-three thousand, eight hundred thirty-seven".