21498846064 has 20 divisors (see below), whose sum is σ = 41929873360. Its totient is φ = 10678233600.

The previous prime is 21498846011. The next prime is 21498846073. The reversal of 21498846064 is 46064889412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4446849 + ... + 4451680.

It is an arithmetic number, because the mean of its divisors is an integer number (2096493668).

Almost surely, 2^21498846064 is an apocalyptic number.

It is an amenable number.

21498846064 is a deficient number, since it is larger than the sum of its proper divisors (20431027296).

21498846064 is a wasteful number, since it uses less digits than its factorization.

21498846064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8898688 (or 8898682 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 52.

The spelling of 21498846064 in words is "twenty-one billion, four hundred ninety-eight million, eight hundred forty-six thousand, sixty-four".