111520640000 has 880 divisors, whose sum is σ = 363430864896. Its totient is φ = 33177600000.

The previous prime is 111520639991. The next prime is 111520640003. The reversal of 111520640000 is 46025111.

It is a tau number, because it is divible by the number of its divisors (880).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (111520640003) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 1527679964 + ... + 1527680036.

Almost surely, 2^111520640000 is an apocalyptic number.

111520640000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111520640000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181715432448).

111520640000 is an abundant number, since it is smaller than the sum of its proper divisors (251910224896).

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

111520640000 is an equidigital number, since it uses as much as digits as its factorization.

111520640000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 111520640000 its reverse (46025111), we get a palindrome (111566665111).

The spelling of 111520640000 in words is "one hundred eleven billion, five hundred twenty million, six hundred forty thousand".