21313392048 has 240 divisors, whose sum is σ = 68842781280. Its totient is φ = 6097084416.

The previous prime is 21313392041. The next prime is 21313392053. The reversal of 21313392048 is 84029331312.

21313392048 is a `hidden beast` number, since 213 + 13 + 392 + 0 + 48 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (21313392041) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2637358 + ... + 2645426.

It is an arithmetic number, because the mean of its divisors is an integer number (286844922).

Almost surely, 2^21313392048 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21313392048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34421390640).

21313392048 is an abundant number, since it is smaller than the sum of its proper divisors (47529389232).

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

21313392048 is a wasteful number, since it uses less digits than its factorization.

21313392048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8196 (or 8187 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 21313392048 in words is "twenty-one billion, three hundred thirteen million, three hundred ninety-two thousand, forty-eight".