21483491040 has 576 divisors, whose sum is σ = 83917596672. Its totient is φ = 4957286400.

The previous prime is 21483491027. The next prime is 21483491077. The reversal of 21483491040 is 4019438412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 21483490986 and 21483491004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 32899354 + ... + 32900006.

It is an arithmetic number, because the mean of its divisors is an integer number (145690272).

Almost surely, 2^21483491040 is an apocalyptic number.

21483491040 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 21483491040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41958798336).

21483491040 is an abundant number, since it is smaller than the sum of its proper divisors (62434105632).

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

21483491040 is a wasteful number, since it uses less digits than its factorization.

21483491040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783 (or 772 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The spelling of 21483491040 in words is "twenty-one billion, four hundred eighty-three million, four hundred ninety-one thousand, forty".