111945090013 has 16 divisors (see below), whose sum is σ = 115831379520. Its totient is φ = 108133344000.

The previous prime is 111945089983. The next prime is 111945090043. The reversal of 111945090013 is 310090549111.

It is an interprime number because it is at equal distance from previous prime (111945089983) and next prime (111945090043).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111945090013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111945090043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1549843 + ... + 1620463.

It is an arithmetic number, because the mean of its divisors is an integer number (7239461220).

Almost surely, 2^111945090013 is an apocalyptic number.

It is an amenable number.

111945090013 is a deficient number, since it is larger than the sum of its proper divisors (3886289507).

111945090013 is an equidigital number, since it uses as much as digits as its factorization.

111945090013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71148.

The product of its (nonzero) digits is 4860, while the sum is 34.

The spelling of 111945090013 in words is "one hundred eleven billion, nine hundred forty-five million, ninety thousand, thirteen".