5611778789 has 12 divisors (see below), whose sum is σ = 5773247424. Its totient is φ = 5454715824.

The previous prime is 5611778779. The next prime is 5611778797. The reversal of 5611778789 is 9878771165.

It is a de Polignac number, because none of the positive numbers 2^k-5611778789 is a prime.

It is a super-2 number, since 2×5611778789² = 62984122353340613042, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5611778729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2719172 + ... + 2721234.

It is an arithmetic number, because the mean of its divisors is an integer number (481103952).

Almost surely, 2^5611778789 is an apocalyptic number.

It is an amenable number.

5611778789 is a deficient number, since it is larger than the sum of its proper divisors (161468635).

5611778789 is a wasteful number, since it uses less digits than its factorization.

5611778789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4124 (or 4087 counting only the distinct ones).

The product of its digits is 5927040, while the sum is 59.

The square root of 5611778789 is about 74911.8067396589. The cubic root of 5611778789 is about 1777.0521832286.

The spelling of 5611778789 in words is "five billion, six hundred eleven million, seven hundred seventy-eight thousand, seven hundred eighty-nine".