111642983489 has 4 divisors (see below), whose sum is σ = 111800449620. Its totient is φ = 111485517360.

The previous prime is 111642983467. The next prime is 111642983561. The reversal of 111642983489 is 984389246111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 984389246111 = 11833 ⋅83190167.

It can be written as a sum of positive squares in 2 ways, for example, as 43250273089 + 68392710400 = 207967^2 + 261520^2 .

It is a cyclic number.

It is not a de Polignac number, because 111642983489 - 2⁸ = 111642983233 is a prime.

It is a super-2 number, since 2×111642983489² (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 (111642983429) 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, 78732002 + ... + 78733419.

It is an arithmetic number, because the mean of its divisors is an integer number (27950112405).

Almost surely, 2^111642983489 is an apocalyptic number.

It is an amenable number.

111642983489 is a deficient number, since it is larger than the sum of its proper divisors (157466131).

111642983489 is an equidigital number, since it uses as much as digits as its factorization.

111642983489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157466130.

The product of its digits is 2985984, while the sum is 56.

The spelling of 111642983489 in words is "one hundred eleven billion, six hundred forty-two million, nine hundred eighty-three thousand, four hundred eighty-nine".