111540104051 has 4 divisors (see below), whose sum is σ = 113111091504. Its totient is φ = 109969116600.

The previous prime is 111540104021. The next prime is 111540104083. The reversal of 111540104051 is 150401045111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150401045111 = 131 ⋅1148099581.

It is a cyclic number.

It is not a de Polignac number, because 111540104051 - 2²² = 111535909747 is a prime.

It is a super-2 number, since 2×111540104051² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111540104021) 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, 785493620 + ... + 785493761.

It is an arithmetic number, because the mean of its divisors is an integer number (28277772876).

Almost surely, 2^111540104051 is an apocalyptic number.

111540104051 is a deficient number, since it is larger than the sum of its proper divisors (1570987453).

111540104051 is an equidigital number, since it uses as much as digits as its factorization.

111540104051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570987452.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 111540104051 its reverse (150401045111), we get a palindrome (261941149162).

The spelling of 111540104051 in words is "one hundred eleven billion, five hundred forty million, one hundred four thousand, fifty-one".