21380348608 has 56 divisors (see below), whose sum is σ = 42808550400. Its totient is φ = 10594172160.

The previous prime is 21380348603. The next prime is 21380348609. The reversal of 21380348608 is 80684308312.

It is not an unprimeable number, because it can be changed into a prime (21380348603) 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, 8910993 + ... + 8913391.

It is an arithmetic number, because the mean of its divisors is an integer number (764438400).

Almost surely, 2^21380348608 is an apocalyptic number.

It is an amenable number.

21380348608 is an abundant number, since it is smaller than the sum of its proper divisors (21428201792).

21380348608 is a wasteful number, since it uses less digits than its factorization.

21380348608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3605 (or 3595 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 21380348608 in words is "twenty-one billion, three hundred eighty million, three hundred forty-eight thousand, six hundred eight".