111493714681 has 2 divisors, whose sum is σ = 111493714682. Its totient is φ = 111493714680.

The previous prime is 111493714603. The next prime is 111493714697. The reversal of 111493714681 is 186417394111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87226306281 + 24267408400 = 295341^2 + 155780^2 .

It is a cyclic number.

It is not a de Polignac number, because 111493714681 - 2¹⁷ = 111493583609 is a prime.

It is a super-2 number, since 2×111493714681² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (111493714081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55746857340 + 55746857341.

It is an arithmetic number, because the mean of its divisors is an integer number (55746857341).

Almost surely, 2^111493714681 is an apocalyptic number.

It is an amenable number.

111493714681 is a deficient number, since it is larger than the sum of its proper divisors (1).

111493714681 is an equidigital number, since it uses as much as digits as its factorization.

111493714681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145152, while the sum is 46.

The spelling of 111493714681 in words is "one hundred eleven billion, four hundred ninety-three million, seven hundred fourteen thousand, six hundred eighty-one".