21482521492 has 6 divisors (see below), whose sum is σ = 37594412618. Its totient is φ = 10741260744.

The previous prime is 21482521469. The next prime is 21482521523. The reversal of 21482521492 is 29412528412.

It can be written as a sum of positive squares in only one way, i.e., 18967900176 + 2514621316 = 137724^2 + 50146^2 .

It is a super-2 number, since 2×21482521492² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2685315183 + ... + 2685315190.

Almost surely, 2^21482521492 is an apocalyptic number.

It is an amenable number.

21482521492 is a deficient number, since it is larger than the sum of its proper divisors (16111891126).

21482521492 is a wasteful number, since it uses less digits than its factorization.

21482521492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5370630377 (or 5370630375 counting only the distinct ones).

The product of its digits is 92160, while the sum is 40.

The spelling of 21482521492 in words is "twenty-one billion, four hundred eighty-two million, five hundred twenty-one thousand, four hundred ninety-two".