111919128954 has 16 divisors (see below), whose sum is σ = 223988200992. Its totient is φ = 37281385808.

The previous prime is 111919128931. The next prime is 111919128989. The reversal of 111919128954 is 459821919111.

It is a super-2 number, since 2×111919128954² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111919128897 and 111919128906.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6237924 + ... + 6255839.

It is an arithmetic number, because the mean of its divisors is an integer number (13999262562).

Almost surely, 2^111919128954 is an apocalyptic number.

111919128954 is an abundant number, since it is smaller than the sum of its proper divisors (112069072038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111919128954 is a wasteful number, since it uses less digits than its factorization.

111919128954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12495261.

The product of its digits is 233280, while the sum is 51.

The spelling of 111919128954 in words is "one hundred eleven billion, nine hundred nineteen million, one hundred twenty-eight thousand, nine hundred fifty-four".