21844553494 has 8 divisors (see below), whose sum is σ = 32769873720. Its totient is φ = 10921262256.

The previous prime is 21844553477. The next prime is 21844553501. The reversal of 21844553494 is 49435544812.

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

It is a super-3 number, since 3×21844553494³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480039 + ... + 523570.

It is an arithmetic number, because the mean of its divisors is an integer number (4096234215).

Almost surely, 2^21844553494 is an apocalyptic number.

21844553494 is a deficient number, since it is larger than the sum of its proper divisors (10925320226).

21844553494 is a wasteful number, since it uses less digits than its factorization.

21844553494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014494.

The product of its digits is 2764800, while the sum is 49.

The spelling of 21844553494 in words is "twenty-one billion, eight hundred forty-four million, five hundred fifty-three thousand, four hundred ninety-four".