21479850743040 has 576 divisors, whose sum is σ = 80525747769600. Its totient is φ = 5406852612096.

The previous prime is 21479850743011. The next prime is 21479850743119. The reversal of 21479850743040 is 4034705897412.

21479850743040 is a `hidden beast` number, since 2 + 1 + 4 + 7 + 98 + 507 + 4 + 3 + 0 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a super-2 number, since 2×21479850743040² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 181830234 + ... + 181948326.

Almost surely, 2^{21479850743040} is an apocalyptic number.

21479850743040 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 21479850743040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40262873884800).

21479850743040 is an abundant number, since it is smaller than the sum of its proper divisors (59045897026560).

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

21479850743040 is a wasteful number, since it uses less digits than its factorization.

21479850743040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118419 (or 118399 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 21479850743040 in words is "twenty-one trillion, four hundred seventy-nine billion, eight hundred fifty million, seven hundred forty-three thousand, forty".