111248836639 has 2 divisors, whose sum is σ = 111248836640. Its totient is φ = 111248836638.

The previous prime is 111248836637. The next prime is 111248836693. The reversal of 111248836639 is 936638842111.

Together with next prime (111248836693) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 111248836639 - 2¹ = 111248836637 is a prime.

Together with 111248836637, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111248836637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55624418319 + 55624418320.

It is an arithmetic number, because the mean of its divisors is an integer number (55624418320).

Almost surely, 2^111248836639 is an apocalyptic number.

111248836639 is a deficient number, since it is larger than the sum of its proper divisors (1).

111248836639 is an equidigital number, since it uses as much as digits as its factorization.

111248836639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1492992, while the sum is 52.

The spelling of 111248836639 in words is "one hundred eleven billion, two hundred forty-eight million, eight hundred thirty-six thousand, six hundred thirty-nine".