111975982493 has 2 divisors, whose sum is σ = 111975982494. Its totient is φ = 111975982492.

The previous prime is 111975982487. The next prime is 111975982499. The reversal of 111975982493 is 394289579111.

It is a balanced prime because it is at equal distance from previous prime (111975982487) and next prime (111975982499).

It can be written as a sum of positive squares in only one way, i.e., 90202914244 + 21773068249 = 300338^2 + 147557^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111975982493 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111975982499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55987991246 + 55987991247.

It is an arithmetic number, because the mean of its divisors is an integer number (55987991247).

Almost surely, 2^111975982493 is an apocalyptic number.

It is an amenable number.

111975982493 is a deficient number, since it is larger than the sum of its proper divisors (1).

111975982493 is an equidigital number, since it uses as much as digits as its factorization.

111975982493 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 59.

The spelling of 111975982493 in words is "one hundred eleven billion, nine hundred seventy-five million, nine hundred eighty-two thousand, four hundred ninety-three".