21832500426 has 96 divisors (see below), whose sum is σ = 48699975168. Its totient is φ = 6470940000.

The previous prime is 21832500401. The next prime is 21832500457. The reversal of 21832500426 is 62400523812.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 70200811 + ... + 70201121.

It is an arithmetic number, because the mean of its divisors is an integer number (507291408).

Almost surely, 2^21832500426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21832500426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24349987584).

21832500426 is an abundant number, since it is smaller than the sum of its proper divisors (26867474742).

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

21832500426 is a wasteful number, since it uses less digits than its factorization.

21832500426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 680 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 21832500426 in words is "twenty-one billion, eight hundred thirty-two million, five hundred thousand, four hundred twenty-six".