113421111645 has 16 divisors (see below), whose sum is σ = 181490375232. Its totient is φ = 60485727360.

The previous prime is 113421111641. The next prime is 113421111679. The reversal of 113421111645 is 546111124311.

It is not a de Polignac number, because 113421111645 - 2² = 113421111641 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (113421111641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173511 + ... + 506900.

It is an arithmetic number, because the mean of its divisors is an integer number (11343148452).

Almost surely, 2^113421111645 is an apocalyptic number.

113421111645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

113421111645 is a deficient number, since it is larger than the sum of its proper divisors (68069263587).

113421111645 is a wasteful number, since it uses less digits than its factorization.

113421111645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 691532.

The product of its digits is 2880, while the sum is 30.

Adding to 113421111645 its reverse (546111124311), we get a palindrome (659532235956).

The spelling of 113421111645 in words is "one hundred thirteen billion, four hundred twenty-one million, one hundred eleven thousand, six hundred forty-five".