21803422454 has 32 divisors (see below), whose sum is σ = 38089338912. Its totient is φ = 9327648000.

The previous prime is 21803422441. The next prime is 21803422483. The reversal of 21803422454 is 45422430812.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 195647 + ... + 286154.

It is an arithmetic number, because the mean of its divisors is an integer number (1190291841).

Almost surely, 2^21803422454 is an apocalyptic number.

21803422454 is a deficient number, since it is larger than the sum of its proper divisors (16285916458).

21803422454 is a wasteful number, since it uses less digits than its factorization.

21803422454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481853 (or 481831 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 35.

The spelling of 21803422454 in words is "twenty-one billion, eight hundred three million, four hundred twenty-two thousand, four hundred fifty-four".