21238379703 has 12 divisors (see below), whose sum is σ = 30706587288. Its totient is φ = 14145568560.

The previous prime is 21238379677. The next prime is 21238379707. The reversal of 21238379703 is 30797383212.

It is not a de Polignac number, because 21238379703 - 2¹² = 21238375607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21238379707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1102525 + ... + 1121622.

It is an arithmetic number, because the mean of its divisors is an integer number (2558882274).

Almost surely, 2^21238379703 is an apocalyptic number.

21238379703 is a deficient number, since it is larger than the sum of its proper divisors (9468207585).

21238379703 is a wasteful number, since it uses less digits than its factorization.

21238379703 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2225214 (or 2225211 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The spelling of 21238379703 in words is "twenty-one billion, two hundred thirty-eight million, three hundred seventy-nine thousand, seven hundred three".