21041834080 has 24 divisors (see below), whose sum is σ = 49711333392. Its totient is φ = 8416733568.

The previous prime is 21041834063. The next prime is 21041834081. The reversal of 21041834080 is 8043814012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21041834081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65755572 + ... + 65755891.

It is an arithmetic number, because the mean of its divisors is an integer number (2071305558).

Almost surely, 2^21041834080 is an apocalyptic number.

21041834080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21041834080 is an abundant number, since it is smaller than the sum of its proper divisors (28669499312).

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

21041834080 is a wasteful number, since it uses less digits than its factorization.

21041834080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131511478 (or 131511470 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The spelling of 21041834080 in words is "twenty-one billion, forty-one million, eight hundred thirty-four thousand, eighty".