5631620552566 has 64 divisors (see below), whose sum is σ = 9072072576000. Its totient is φ = 2614043418624.

The previous prime is 5631620552491. The next prime is 5631620552617. The reversal of 5631620552566 is 6652550261365.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 521489235 + ... + 521500033.

It is an arithmetic number, because the mean of its divisors is an integer number (141751134000).

Almost surely, 2^{5631620552566} is an apocalyptic number.

5631620552566 is a deficient number, since it is larger than the sum of its proper divisors (3440452023434).

5631620552566 is a wasteful number, since it uses less digits than its factorization.

5631620552566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11941.

The product of its (nonzero) digits is 9720000, while the sum is 52.

The spelling of 5631620552566 in words is "five trillion, six hundred thirty-one billion, six hundred twenty million, five hundred fifty-two thousand, five hundred sixty-six".