21041498492 has 24 divisors (see below), whose sum is σ = 42148076544. Its totient is φ = 9003839472.

The previous prime is 21041498483. The next prime is 21041498531. The reversal of 21041498492 is 29489414012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562628 + ... + 598859.

It is an arithmetic number, because the mean of its divisors is an integer number (1756169856).

Almost surely, 2^21041498492 is an apocalyptic number.

It is an amenable number.

21041498492 is an abundant number, since it is smaller than the sum of its proper divisors (21106578052).

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

21041498492 is a wasteful number, since it uses less digits than its factorization.

21041498492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1162145 (or 1162143 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 21041498492 in words is "twenty-one billion, forty-one million, four hundred ninety-eight thousand, four hundred ninety-two".