5661126687 has 16 divisors (see below), whose sum is σ = 7734849408. Its totient is φ = 3680997600.

The previous prime is 5661126677. The next prime is 5661126749. The reversal of 5661126687 is 7866211665.

It is not a de Polignac number, because 5661126687 - 2¹⁴ = 5661110303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5661126607) 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, 59128 + ... + 121730.

It is an arithmetic number, because the mean of its divisors is an integer number (483428088).

Almost surely, 2^5661126687 is an apocalyptic number.

5661126687 is a deficient number, since it is larger than the sum of its proper divisors (2073722721).

5661126687 is a wasteful number, since it uses less digits than its factorization.

5661126687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63350.

The product of its digits is 725760, while the sum is 48.

The square root of 5661126687 is about 75240.4591094446. The cubic root of 5661126687 is about 1782.2459012252.

The spelling of 5661126687 in words is "five billion, six hundred sixty-one million, one hundred twenty-six thousand, six hundred eighty-seven".