21823458762168 has 144 divisors (see below), whose sum is σ = 69210362529360. Its totient is φ = 6193980576000.

The previous prime is 21823458762143. The next prime is 21823458762173. The reversal of 21823458762168 is 86126785432812.

21823458762168 is a `hidden beast` number, since 2 + 1 + 8 + 2 + 34 + 587 + 6 + 2 + 16 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 19950013 + ... + 21015468.

It is an arithmetic number, because the mean of its divisors is an integer number (480627517565).

Almost surely, 2^{21823458762168} is an apocalyptic number.

21823458762168 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

21823458762168 is an abundant number, since it is smaller than the sum of its proper divisors (47386903767192).

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

21823458762168 is a wasteful number, since it uses less digits than its factorization.

21823458762168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40965658 (or 40965644 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 63.

The spelling of 21823458762168 in words is "twenty-one trillion, eight hundred twenty-three billion, four hundred fifty-eight million, seven hundred sixty-two thousand, one hundred sixty-eight".