21341797503 has 16 divisors (see below), whose sum is σ = 30703480416. Its totient is φ = 13108193280.

The previous prime is 21341797471. The next prime is 21341797559. The reversal of 21341797503 is 30579714312.

It is not a de Polignac number, because 21341797503 - 2⁵ = 21341797471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21341793503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 504850 + ... + 545487.

It is an arithmetic number, because the mean of its divisors is an integer number (1918967526).

Almost surely, 2^21341797503 is an apocalyptic number.

21341797503 is a deficient number, since it is larger than the sum of its proper divisors (9361682913).

21341797503 is a wasteful number, since it uses less digits than its factorization.

21341797503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050874.

The product of its (nonzero) digits is 158760, while the sum is 42.

The spelling of 21341797503 in words is "twenty-one billion, three hundred forty-one million, seven hundred ninety-seven thousand, five hundred three".