5661020904100 has 27 divisors (see below), whose sum is σ = 12284466992707. Its totient is φ = 2264398844480.

The previous prime is 5661020904043. The next prime is 5661020904131. The reversal of 5661020904100 is 14090201665.

The square root of 5661020904100 is 2379290.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 983282459236 + 4677738444864 = 991606^2 + 2162808^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 23673936 + ... + 23911864.

Almost surely, 2^{5661020904100} is an apocalyptic number.

5661020904100 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

5661020904100 is the 2379290-th square number.

It is an amenable number.

5661020904100 is an abundant number, since it is smaller than the sum of its proper divisors (6623446088607).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5661020904100 is an frugal number, since it uses more digits than its factorization.

5661020904100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 475872 (or 237936 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 5661020904100 in words is "five trillion, six hundred sixty-one billion, twenty million, nine hundred four thousand, one hundred".