5661555665510 has 32 divisors (see below), whose sum is σ = 10248356969280. Its totient is φ = 2251867258368.

The previous prime is 5661555665503. The next prime is 5661555665567. The reversal of 5661555665510 is 155665551665.

It is a congruent number.

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, 931082 + ... + 3491421.

It is an arithmetic number, because the mean of its divisors is an integer number (320261155290).

Almost surely, 2^{5661555665510} is an apocalyptic number.

5661555665510 is a deficient number, since it is larger than the sum of its proper divisors (4586801303770).

5661555665510 is a wasteful number, since it uses less digits than its factorization.

5661555665510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4423232.

The product of its (nonzero) digits is 20250000, while the sum is 56.

The spelling of 5661555665510 in words is "five trillion, six hundred sixty-one billion, five hundred fifty-five million, six hundred sixty-five thousand, five hundred ten".