5661063551 has 16 divisors (see below), whose sum is σ = 6664387968. Its totient is φ = 4740808800.

The previous prime is 5661063533. The next prime is 5661063553. The reversal of 5661063551 is 1553601665.

It is a de Polignac number, because none of the positive numbers 2^k-5661063551 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 (5661063553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29900 + ... + 110526.

It is an arithmetic number, because the mean of its divisors is an integer number (416524248).

Almost surely, 2^5661063551 is an apocalyptic number.

5661063551 is a deficient number, since it is larger than the sum of its proper divisors (1003324417).

5661063551 is a wasteful number, since it uses less digits than its factorization.

5661063551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81142.

The product of its (nonzero) digits is 81000, while the sum is 38.

The square root of 5661063551 is about 75240.0395467732. The cubic root of 5661063551 is about 1782.2392756715.

The spelling of 5661063551 in words is "five billion, six hundred sixty-one million, sixty-three thousand, five hundred fifty-one".