111975834647 has 2 divisors, whose sum is σ = 111975834648. Its totient is φ = 111975834646.

The previous prime is 111975834643. The next prime is 111975834653. The reversal of 111975834647 is 746438579111.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111975834647 - 2² = 111975834643 is a prime.

It is a super-2 number, since 2×111975834647² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111975834592 and 111975834601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111975834643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55987917323 + 55987917324.

It is an arithmetic number, because the mean of its divisors is an integer number (55987917324).

Almost surely, 2^111975834647 is an apocalyptic number.

111975834647 is a deficient number, since it is larger than the sum of its proper divisors (1).

111975834647 is an equidigital number, since it uses as much as digits as its factorization.

111975834647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5080320, while the sum is 56.

The spelling of 111975834647 in words is "one hundred eleven billion, nine hundred seventy-five million, eight hundred thirty-four thousand, six hundred forty-seven".