111923670538 has 24 divisors (see below), whose sum is σ = 177432255360. Its totient is φ = 52804125000.

The previous prime is 111923670487. The next prime is 111923670539. The reversal of 111923670538 is 835076329111.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (111923670539) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2370663 + ... + 2417413.

It is an arithmetic number, because the mean of its divisors is an integer number (7393010640).

Almost surely, 2^111923670538 is an apocalyptic number.

111923670538 is a deficient number, since it is larger than the sum of its proper divisors (65508584822).

111923670538 is an equidigital number, since it uses as much as digits as its factorization.

111923670538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47274 (or 47023 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 46.

Adding to 111923670538 its reverse (835076329111), we get a palindrome (946999999649).

The spelling of 111923670538 in words is "one hundred eleven billion, nine hundred twenty-three million, six hundred seventy thousand, five hundred thirty-eight".