21114403504 has 20 divisors (see below), whose sum is σ = 40911572464. Its totient is φ = 10556578368.

The previous prime is 21114403487. The next prime is 21114403547. The reversal of 21114403504 is 40530441112.

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, 371509 + ... + 424555.

Almost surely, 2^21114403504 is an apocalyptic number.

It is an amenable number.

21114403504 is a deficient number, since it is larger than the sum of its proper divisors (19797168960).

21114403504 is a wasteful number, since it uses less digits than its factorization.

21114403504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77932 (or 77926 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

Adding to 21114403504 its reverse (40530441112), we get a palindrome (61644844616).

The spelling of 21114403504 in words is "twenty-one billion, one hundred fourteen million, four hundred three thousand, five hundred four".