111390297439679 has 4 divisors (see below), whose sum is σ = 114107133962640. Its totient is φ = 108673460916720.

The previous prime is 111390297439549. The next prime is 111390297439697. The reversal of 111390297439679 is 976934792093111.

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

It is a cyclic number.

It is not a de Polignac number, because 111390297439679 - 2¹² = 111390297435583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111390297436679) 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, 1358418261419 + ... + 1358418261500.

It is an arithmetic number, because the mean of its divisors is an integer number (28526783490660).

Almost surely, 2^{111390297439679} is an apocalyptic number.

111390297439679 is a deficient number, since it is larger than the sum of its proper divisors (2716836522961).

111390297439679 is an equidigital number, since it uses as much as digits as its factorization.

111390297439679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2716836522960.

The product of its (nonzero) digits is 138883248, while the sum is 71.

The spelling of 111390297439679 in words is "one hundred eleven trillion, three hundred ninety billion, two hundred ninety-seven million, four hundred thirty-nine thousand, six hundred seventy-nine".