111355065643431 has 4 divisors (see below), whose sum is σ = 148473420857912. Its totient is φ = 74236710428952.

The previous prime is 111355065643427. The next prime is 111355065643477. The reversal of 111355065643431 is 134346560553111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111355065643431 - 2² = 111355065643427 is a prime.

It is a super-2 number, since 2×111355065643431² (a number of 29 digits) 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 (111355065643421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18559177607236 + ... + 18559177607241.

It is an arithmetic number, because the mean of its divisors is an integer number (37118355214478).

Almost surely, 2^{111355065643431} is an apocalyptic number.

111355065643431 is a deficient number, since it is larger than the sum of its proper divisors (37118355214481).

111355065643431 is an equidigital number, since it uses as much as digits as its factorization.

111355065643431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37118355214480.

The product of its (nonzero) digits is 1944000, while the sum is 48.

The spelling of 111355065643431 in words is "one hundred eleven trillion, three hundred fifty-five billion, sixty-five million, six hundred forty-three thousand, four hundred thirty-one".