5661111073 has 2 divisors, whose sum is σ = 5661111074. Its totient is φ = 5661111072.

The previous prime is 5661111067. The next prime is 5661111103. The reversal of 5661111073 is 3701111665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4509391104 + 1151719969 = 67152^2 + 33937^2 .

It is a cyclic number.

It is not a de Polignac number, because 5661111073 - 2⁵ = 5661111041 is a prime.

It is a super-2 number, since 2×5661111073² = 64096357161686422658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5661111473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2830555536 + 2830555537.

It is an arithmetic number, because the mean of its divisors is an integer number (2830555537).

Almost surely, 2^5661111073 is an apocalyptic number.

It is an amenable number.

5661111073 is a deficient number, since it is larger than the sum of its proper divisors (1).

5661111073 is an equidigital number, since it uses as much as digits as its factorization.

5661111073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 5661111073 is about 75240.3553487090. The cubic root of 5661111073 is about 1782.2442626813.

The spelling of 5661111073 in words is "five billion, six hundred sixty-one million, one hundred eleven thousand, seventy-three".