21481006096 has 45 divisors (see below), whose sum is σ = 45760735839. Its totient is φ = 9761162400.

The previous prime is 21481006039. The next prime is 21481006103. The reversal of 21481006096 is 69060018412.

It is a happy number.

The square root of 21481006096 is 146564.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×21481006096² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6447151 + ... + 6450481.

Almost surely, 2^21481006096 is an apocalyptic number.

21481006096 is the 146564-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21481006096

21481006096 is an abundant number, since it is smaller than the sum of its proper divisors (24279729743).

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

21481006096 is an frugal number, since it uses more digits than its factorization.

21481006096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6692 (or 3344 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

Multiplying 21481006096 by its product of nonzero digits (20736), we get a square (445430142406656 = 21105216²).

The spelling of 21481006096 in words is "twenty-one billion, four hundred eighty-one million, six thousand, ninety-six".