21482492664 has 32 divisors (see below), whose sum is σ = 54848920320. Its totient is φ = 7008472416.

The previous prime is 21482492659. The next prime is 21482492677. The reversal of 21482492664 is 46629428412.

It is a super-2 number, since 2×21482492664² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9521254 + ... + 9523509.

It is an arithmetic number, because the mean of its divisors is an integer number (1714028760).

Almost surely, 2^21482492664 is an apocalyptic number.

21482492664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21482492664 is an abundant number, since it is smaller than the sum of its proper divisors (33366427656).

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

21482492664 is a wasteful number, since it uses less digits than its factorization.

21482492664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19044819 (or 19044815 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 48.

The spelling of 21482492664 in words is "twenty-one billion, four hundred eighty-two million, four hundred ninety-two thousand, six hundred sixty-four".