111271965952 has 144 divisors (see below), whose sum is σ = 259833280000. Its totient is φ = 47538247680.

The previous prime is 111271965943. The next prime is 111271965991. The reversal of 111271965952 is 259569172111.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a junction number, because it is equal to n+sod(n) for n = 111271965896 and 111271965905.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30643177 + ... + 30646807.

Almost surely, 2^111271965952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111271965952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129916640000).

111271965952 is an abundant number, since it is smaller than the sum of its proper divisors (148561314048).

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

111271965952 is an frugal number, since it uses more digits than its factorization.

111271965952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4017 (or 3989 counting only the distinct ones).

The product of its digits is 340200, while the sum is 49.

The spelling of 111271965952 in words is "one hundred eleven billion, two hundred seventy-one million, nine hundred sixty-five thousand, nine hundred fifty-two".