111780827139 has 4 divisors (see below), whose sum is σ = 149041102856. Its totient is φ = 74520551424.

The previous prime is 111780827131. The next prime is 111780827153. The reversal of 111780827139 is 931728087111.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 111780827139 - 2³ = 111780827131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111780827131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18630137854 + ... + 18630137859.

It is an arithmetic number, because the mean of its divisors is an integer number (37260275714).

Almost surely, 2^111780827139 is an apocalyptic number.

111780827139 is a deficient number, since it is larger than the sum of its proper divisors (37260275717).

111780827139 is an equidigital number, since it uses as much as digits as its factorization.

111780827139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37260275716.

The product of its (nonzero) digits is 169344, while the sum is 48.

The spelling of 111780827139 in words is "one hundred eleven billion, seven hundred eighty million, eight hundred twenty-seven thousand, one hundred thirty-nine".