111512402545 has 4 divisors (see below), whose sum is σ = 133814883060. Its totient is φ = 89209922032.

The previous prime is 111512402503. The next prime is 111512402593. The reversal of 111512402545 is 545204215111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 46029127936 + 65483274609 = 214544^2 + 255897^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111512402545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11151240250 + ... + 11151240259.

It is an arithmetic number, because the mean of its divisors is an integer number (33453720765).

Almost surely, 2^111512402545 is an apocalyptic number.

It is an amenable number.

111512402545 is a deficient number, since it is larger than the sum of its proper divisors (22302480515).

111512402545 is an equidigital number, since it uses as much as digits as its factorization.

111512402545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22302480514.

The product of its (nonzero) digits is 8000, while the sum is 31.

Adding to 111512402545 its reverse (545204215111), we get a palindrome (656716617656).

The spelling of 111512402545 in words is "one hundred eleven billion, five hundred twelve million, four hundred two thousand, five hundred forty-five".