21313705152 has 56 divisors (see below), whose sum is σ = 56607065856. Its totient is φ = 7077538048.

The previous prime is 21313705151. The next prime is 21313705169. The reversal of 21313705152 is 25150731312.

It is not an unprimeable number, because it can be changed into a prime (21313705151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160548 + ... + 261539.

Almost surely, 2^21313705152 is an apocalyptic number.

It is an amenable number.

21313705152 is an abundant number, since it is smaller than the sum of its proper divisors (35293360704).

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

21313705152 is a wasteful number, since it uses less digits than its factorization.

21313705152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422365 (or 422355 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The spelling of 21313705152 in words is "twenty-one billion, three hundred thirteen million, seven hundred five thousand, one hundred fifty-two".