21424754873712 has 20 divisors (see below), whose sum is σ = 55347283423880. Its totient is φ = 7141584957888.

The previous prime is 21424754873647. The next prime is 21424754873861. The reversal of 21424754873712 is 21737845742412.

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, 223174529887 + ... + 223174529982.

It is an arithmetic number, because the mean of its divisors is an integer number (2767364171194).

Almost surely, 2^{21424754873712} is an apocalyptic number.

It is an amenable number.

21424754873712 is an abundant number, since it is smaller than the sum of its proper divisors (33922528550168).

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

21424754873712 is a wasteful number, since it uses less digits than its factorization.

21424754873712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446349059880 (or 446349059874 counting only the distinct ones).

The product of its digits is 21073920, while the sum is 57.

The spelling of 21424754873712 in words is "twenty-one trillion, four hundred twenty-four billion, seven hundred fifty-four million, eight hundred seventy-three thousand, seven hundred twelve".