11561416839 has 12 divisors (see below), whose sum is σ = 19085513616. Its totient is φ = 6606523872.

The previous prime is 11561416807. The next prime is 11561416849. The reversal of 11561416839 is 93861416511.

11561416839 is a `hidden beast` number, since 1 + 1 + 561 + 4 + 1 + 6 + 83 + 9 = 666.

It is not a de Polignac number, because 11561416839 - 2⁵ = 11561416807 is a prime.

It is a super-2 number, since 2×11561416839² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 11561416794 and 11561416803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11561416849) 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, 91757214 + ... + 91757339.

It is an arithmetic number, because the mean of its divisors is an integer number (1590459468).

Almost surely, 2^11561416839 is an apocalyptic number.

11561416839 is a deficient number, since it is larger than the sum of its proper divisors (7524096777).

11561416839 is a wasteful number, since it uses less digits than its factorization.

11561416839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183514566 (or 183514563 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The spelling of 11561416839 in words is "eleven billion, five hundred sixty-one million, four hundred sixteen thousand, eight hundred thirty-nine".