21370847600 has 30 divisors (see below), whose sum is σ = 51343462320. Its totient is φ = 8548338880.

The previous prime is 21370847551. The next prime is 21370847623. The reversal of 21370847600 is 674807312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 26713160 + ... + 26713959.

It is an arithmetic number, because the mean of its divisors is an integer number (1711448744).

Almost surely, 2^21370847600 is an apocalyptic number.

21370847600 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21370847600 is an abundant number, since it is smaller than the sum of its proper divisors (29972614720).

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

21370847600 is a wasteful number, since it uses less digits than its factorization.

21370847600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53427137 (or 53427126 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 21370847600 in words is "twenty-one billion, three hundred seventy million, eight hundred forty-seven thousand, six hundred".