5561006055061 has 4 divisors (see below), whose sum is σ = 5598328243500. Its totient is φ = 5523683866624.

The previous prime is 5561006055013. The next prime is 5561006055067. The reversal of 5561006055061 is 1605506001655.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3534753448836 + 2026252606225 = 1880094^2 + 1423465^2 .

It is a cyclic number.

It is not a de Polignac number, because 5561006055061 - 2³³ = 5552416120469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561006055067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18661093996 + ... + 18661094293.

It is an arithmetic number, because the mean of its divisors is an integer number (1399582060875).

Almost surely, 2^{5561006055061} is an apocalyptic number.

It is an amenable number.

5561006055061 is a deficient number, since it is larger than the sum of its proper divisors (37322188439).

5561006055061 is a wasteful number, since it uses less digits than its factorization.

5561006055061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37322188438.

The product of its (nonzero) digits is 135000, while the sum is 40.

The spelling of 5561006055061 in words is "five trillion, five hundred sixty-one billion, six million, fifty-five thousand, sixty-one".