21324466252 has 12 divisors (see below), whose sum is σ = 37342922400. Its totient is φ = 10655059856.

The previous prime is 21324466249. The next prime is 21324466271. The reversal of 21324466252 is 25266442312.

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, 1786627 + ... + 1798522.

It is an arithmetic number, because the mean of its divisors is an integer number (3111910200).

Almost surely, 2^21324466252 is an apocalyptic number.

It is an amenable number.

21324466252 is a deficient number, since it is larger than the sum of its proper divisors (16018456148).

21324466252 is a wasteful number, since it uses less digits than its factorization.

21324466252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3586640 (or 3586638 counting only the distinct ones).

The product of its digits is 138240, while the sum is 37.

The spelling of 21324466252 in words is "twenty-one billion, three hundred twenty-four million, four hundred sixty-six thousand, two hundred fifty-two".