111995019245 has 16 divisors (see below), whose sum is σ = 136111088880. Its totient is φ = 88457478144.

The previous prime is 111995019173. The next prime is 111995019259. The reversal of 111995019245 is 542910599111.

It can be written as a sum of positive squares in 8 ways, for example, as 3050794756 + 108944224489 = 55234^2 + 330067^2 .

It is a cyclic number.

It is not a de Polignac number, because 111995019245 - 2³⁰ = 110921277421 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 111995019245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240440 + ... + 530849.

It is an arithmetic number, because the mean of its divisors is an integer number (8506943055).

Almost surely, 2^111995019245 is an apocalyptic number.

It is an amenable number.

111995019245 is a deficient number, since it is larger than the sum of its proper divisors (24116069635).

111995019245 is a wasteful number, since it uses less digits than its factorization.

111995019245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771664.

The product of its (nonzero) digits is 145800, while the sum is 47.

The spelling of 111995019245 in words is "one hundred eleven billion, nine hundred ninety-five million, nineteen thousand, two hundred forty-five".