111951438150 has 96 divisors (see below), whose sum is σ = 279345335040. Its totient is φ = 29670858880.

The previous prime is 111951438143. The next prime is 111951438163. The reversal of 111951438150 is 51834159111.

It is a junction number, because it is equal to n+sod(n) for n = 111951438099 and 111951438108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17871919 + ... + 17878181.

It is an arithmetic number, because the mean of its divisors is an integer number (2909847240).

Almost surely, 2^111951438150 is an apocalyptic number.

111951438150 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 111951438150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (139672667520).

111951438150 is an abundant number, since it is smaller than the sum of its proper divisors (167393896890).

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

111951438150 is a wasteful number, since it uses less digits than its factorization.

111951438150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6990 (or 6985 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 39.

The spelling of 111951438150 in words is "one hundred eleven billion, nine hundred fifty-one million, four hundred thirty-eight thousand, one hundred fifty".