21048368290 has 16 divisors (see below), whose sum is σ = 38159634240. Its totient is φ = 8358775920.

The previous prime is 21048368149. The next prime is 21048368293. The reversal of 21048368290 is 9286384012.

It is not an unprimeable number, because it can be changed into a prime (21048368293) 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, 7569966 + ... + 7572745.

It is an arithmetic number, because the mean of its divisors is an integer number (2384977140).

Almost surely, 2^21048368290 is an apocalyptic number.

21048368290 is a deficient number, since it is larger than the sum of its proper divisors (17111265950).

21048368290 is a wasteful number, since it uses less digits than its factorization.

21048368290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15142857.

The product of its (nonzero) digits is 165888, while the sum is 43.

The spelling of 21048368290 in words is "twenty-one billion, forty-eight million, three hundred sixty-eight thousand, two hundred ninety".