111662120523 has 8 divisors (see below), whose sum is σ = 149046979648. Its totient is φ = 74359337544.

The previous prime is 111662120503. The next prime is 111662120627. The reversal of 111662120523 is 325021266111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 111662120523 - 2¹² = 111662116427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111662120503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20515861 + ... + 20521302.

It is an arithmetic number, because the mean of its divisors is an integer number (18630872456).

Almost surely, 2^111662120523 is an apocalyptic number.

111662120523 is a deficient number, since it is larger than the sum of its proper divisors (37384859125).

111662120523 is an equidigital number, since it uses as much as digits as its factorization.

111662120523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41038073.

The product of its (nonzero) digits is 4320, while the sum is 30.

Adding to 111662120523 its reverse (325021266111), we get a palindrome (436683386634).

The spelling of 111662120523 in words is "one hundred eleven billion, six hundred sixty-two million, one hundred twenty thousand, five hundred twenty-three".