21032441040 has 160 divisors (see below), whose sum is σ = 72481360896. Its totient is φ = 5010186240.

The previous prime is 21032441029. The next prime is 21032441069. The reversal of 21032441040 is 4014423012.

It is a super-2 number, since 2×21032441040² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21032440998 and 21032441016.

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, 12009 + ... + 205448.

Almost surely, 2^21032441040 is an apocalyptic number.

21032441040 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 21032441040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36240680448).

21032441040 is an abundant number, since it is smaller than the sum of its proper divisors (51448919856).

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

21032441040 is a wasteful number, since it uses less digits than its factorization.

21032441040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217517 (or 217511 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21032441040 its reverse (4014423012), we get a palindrome (25046864052).

The spelling of 21032441040 in words is "twenty-one billion, thirty-two million, four hundred forty-one thousand, forty".