111719286428 has 24 divisors (see below), whose sum is σ = 197781266592. Its totient is φ = 55213854464.

The previous prime is 111719286397. The next prime is 111719286443. The reversal of 111719286428 is 824682917111.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 309800 + ... + 565167.

It is an arithmetic number, because the mean of its divisors is an integer number (8240886108).

Almost surely, 2^111719286428 is an apocalyptic number.

It is an amenable number.

111719286428 is a deficient number, since it is larger than the sum of its proper divisors (86061980164).

111719286428 is a wasteful number, since it uses less digits than its factorization.

111719286428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875341 (or 875339 counting only the distinct ones).

The product of its digits is 387072, while the sum is 50.

The spelling of 111719286428 in words is "one hundred eleven billion, seven hundred nineteen million, two hundred eighty-six thousand, four hundred twenty-eight".