111455434399 has 4 divisors (see below), whose sum is σ = 111460434480. Its totient is φ = 111450434320.

The previous prime is 111455434393. The next prime is 111455434403. The reversal of 111455434399 is 993434554111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993434554111 = 307 ⋅3235943173.

It is a cyclic number.

It is not a de Polignac number, because 111455434399 - 2¹⁷ = 111455303327 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 (111455434393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2466454 + ... + 2511235.

It is an arithmetic number, because the mean of its divisors is an integer number (27865108620).

Almost surely, 2^111455434399 is an apocalyptic number.

111455434399 is a deficient number, since it is larger than the sum of its proper divisors (5000081).

111455434399 is an equidigital number, since it uses as much as digits as its factorization.

111455434399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5000080.

The product of its digits is 1166400, while the sum is 49.

The spelling of 111455434399 in words is "one hundred eleven billion, four hundred fifty-five million, four hundred thirty-four thousand, three hundred ninety-nine".