21937553803 has 8 divisors (see below), whose sum is σ = 24168827376. Its totient is φ = 19745772000.

The previous prime is 21937553789. The next prime is 21937553809. The reversal of 21937553803 is 30835573912.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21937553803 - 2¹³ = 21937545611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21937553809) 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, 9871776 + ... + 9873997.

It is an arithmetic number, because the mean of its divisors is an integer number (3021103422).

Almost surely, 2^21937553803 is an apocalyptic number.

21937553803 is a deficient number, since it is larger than the sum of its proper divisors (2231273573).

21937553803 is a wasteful number, since it uses less digits than its factorization.

21937553803 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19745885.

The product of its (nonzero) digits is 680400, while the sum is 46.

The spelling of 21937553803 in words is "twenty-one billion, nine hundred thirty-seven million, five hundred fifty-three thousand, eight hundred three".