5661111069 has 12 divisors (see below), whose sum is σ = 8178454492. Its totient is φ = 3773476800.

The previous prime is 5661111067. The next prime is 5661111073. The reversal of 5661111069 is 9601111665.

It can be written as a sum of positive squares in 2 ways, for example, as 1662192900 + 3998918169 = 40770^2 + 63237^2 .

It is not a de Polignac number, because 5661111069 - 2¹ = 5661111067 is a prime.

It is a super-2 number, since 2×5661111069² = 64096357071108645522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661111067) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14649 + ... + 107409.

Almost surely, 2^5661111069 is an apocalyptic number.

It is an amenable number.

5661111069 is a deficient number, since it is larger than the sum of its proper divisors (2517343423).

5661111069 is a wasteful number, since it uses less digits than its factorization.

5661111069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99548 (or 99545 counting only the distinct ones).

The product of its (nonzero) digits is 9720, while the sum is 36.

The square root of 5661111069 is about 75240.3553221275. The cubic root of 5661111069 is about 1782.2442622615.

The spelling of 5661111069 in words is "five billion, six hundred sixty-one million, one hundred eleven thousand, sixty-nine".