21346838048 has 48 divisors (see below), whose sum is σ = 44463323520. Its totient is φ = 10060275456.

The previous prime is 21346838033. The next prime is 21346838063. The reversal of 21346838048 is 84083864312.

It is an interprime number because it is at equal distance from previous prime (21346838033) and next prime (21346838063).

It is a junction number, because it is equal to n+sod(n) for n = 21346837993 and 21346838011.

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 7 ways as a sum of consecutive naturals, for example, 30665 + ... + 208887.

It is an arithmetic number, because the mean of its divisors is an integer number (926319240).

Almost surely, 2^21346838048 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 21346838048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22231661760).

21346838048 is an abundant number, since it is smaller than the sum of its proper divisors (23116485472).

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

21346838048 is a wasteful number, since it uses less digits than its factorization.

21346838048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178449 (or 178441 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 47.

The spelling of 21346838048 in words is "twenty-one billion, three hundred forty-six million, eight hundred thirty-eight thousand, forty-eight".