113421851136 has 480 divisors, whose sum is σ = 375044567040. Its totient is φ = 32663347200.

The previous prime is 113421851099. The next prime is 113421851143. The reversal of 113421851136 is 631158124311.

113421851136 is a `hidden beast` number, since 1 + 1 + 342 + 185 + 1 + 136 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 113421851136.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 315938125 + ... + 315938483.

It is an arithmetic number, because the mean of its divisors is an integer number (781342848).

Almost surely, 2^113421851136 is an apocalyptic number.

113421851136 is a gapful number since it is divisible by the number (16) 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 113421851136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (187522283520).

113421851136 is an abundant number, since it is smaller than the sum of its proper divisors (261622715904).

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

113421851136 is a wasteful number, since it uses less digits than its factorization.

113421851136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688 (or 669 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

Adding to 113421851136 its reverse (631158124311), we get a palindrome (744579975447).

The spelling of 113421851136 in words is "one hundred thirteen billion, four hundred twenty-one million, eight hundred fifty-one thousand, one hundred thirty-six".