111604252152 has 128 divisors (see below), whose sum is σ = 307486368000. Its totient is φ = 33617848320.

The previous prime is 111604252139. The next prime is 111604252183. The reversal of 111604252152 is 251252406111.

It is a super-3 number, since 3×111604252152³ (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1046752 + ... + 1148432.

It is an arithmetic number, because the mean of its divisors is an integer number (2402237250).

Almost surely, 2^111604252152 is an apocalyptic number.

111604252152 is a gapful number since it is divisible by the number (12) 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 111604252152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153743184000).

111604252152 is an abundant number, since it is smaller than the sum of its proper divisors (195882115848).

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

111604252152 is a wasteful number, since it uses less digits than its factorization.

111604252152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101821 (or 101817 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

Adding to 111604252152 its reverse (251252406111), we get a palindrome (362856658263).

The spelling of 111604252152 in words is "one hundred eleven billion, six hundred four million, two hundred fifty-two thousand, one hundred fifty-two".