21814599541812 has 96 divisors (see below), whose sum is σ = 66219812112384. Its totient is φ = 5419776278400.

The previous prime is 21814599541799. The next prime is 21814599541853.

21814599541812 is nontrivially palindromic in base 10.

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, 513215139 + ... + 513257642.

It is an arithmetic number, because the mean of its divisors is an integer number (689789709504).

Almost surely, 2^{21814599541812} is an apocalyptic number.

21814599541812 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

21814599541812 is an abundant number, since it is smaller than the sum of its proper divisors (44405212570572).

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

21814599541812 is a wasteful number, since it uses less digits than its factorization.

21814599541812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026472829 (or 1026472827 counting only the distinct ones).

The product of its digits is 8294400, while the sum is 60.

The spelling of 21814599541812 in words is "twenty-one trillion, eight hundred fourteen billion, five hundred ninety-nine million, five hundred forty-one thousand, eight hundred twelve".