21182466000 has 160 divisors (see below), whose sum is σ = 68690389248. Its totient is φ = 5615731200.

The previous prime is 21182465971. The next prime is 21182466007. The reversal of 21182466000 is 66428112.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21182466007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1027797 + ... + 1048203.

Almost surely, 2^21182466000 is an apocalyptic number.

21182466000 is a gapful number since it is divisible by the number (20) 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 21182466000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34345194624).

21182466000 is an abundant number, since it is smaller than the sum of its proper divisors (47507923248).

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

21182466000 is a wasteful number, since it uses less digits than its factorization.

21182466000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20606 (or 20590 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The spelling of 21182466000 in words is "twenty-one billion, one hundred eighty-two million, four hundred sixty-six thousand".