111545351123 has 4 divisors (see below), whose sum is σ = 115143588288. Its totient is φ = 107947113960.

The previous prime is 111545351053. The next prime is 111545351143. The reversal of 111545351123 is 321153545111.

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 111545351123 - 2²⁶ = 111478242259 is a prime.

It is a super-2 number, since 2×111545351123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111545351123.

It is not an unprimeable number, because it can be changed into a prime (111545351143) 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, 1799118536 + ... + 1799118597.

It is an arithmetic number, because the mean of its divisors is an integer number (28785897072).

Almost surely, 2^111545351123 is an apocalyptic number.

111545351123 is a deficient number, since it is larger than the sum of its proper divisors (3598237165).

111545351123 is an equidigital number, since it uses as much as digits as its factorization.

111545351123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3598237164.

The product of its digits is 9000, while the sum is 32.

Adding to 111545351123 its reverse (321153545111), we get a palindrome (432698896234).

The spelling of 111545351123 in words is "one hundred eleven billion, five hundred forty-five million, three hundred fifty-one thousand, one hundred twenty-three".