5561765623 has 4 divisors (see below), whose sum is σ = 5562099760. Its totient is φ = 5561431488.

The previous prime is 5561765603. The next prime is 5561765653. The reversal of 5561765623 is 3265671655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3265671655 = 5 ⋅653134331.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5561765623 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 (5561765603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 140715 + ... + 175852.

It is an arithmetic number, because the mean of its divisors is an integer number (1390524940).

Almost surely, 2^5561765623 is an apocalyptic number.

5561765623 is a deficient number, since it is larger than the sum of its proper divisors (334137).

5561765623 is a wasteful number, since it uses less digits than its factorization.

5561765623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334136.

The product of its digits is 1134000, while the sum is 46.

The square root of 5561765623 is about 74577.2460137809. The cubic root of 5561765623 is about 1771.7572877073.

The spelling of 5561765623 in words is "five billion, five hundred sixty-one million, seven hundred sixty-five thousand, six hundred twenty-three".