21414432104 has 48 divisors (see below), whose sum is σ = 44191195020. Its totient is φ = 9721520640.

The previous prime is 21414432103. The next prime is 21414432113. The reversal of 21414432104 is 40123441412.

It can be written as a sum of positive squares in 6 ways, for example, as 3857652100 + 17556780004 = 62110^2 + 132502^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (21414432103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47357 + ... + 212300.

Almost surely, 2^21414432104 is an apocalyptic number.

It is an amenable number.

21414432104 is an abundant number, since it is smaller than the sum of its proper divisors (22776762916).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21414432104 is a wasteful number, since it uses less digits than its factorization.

21414432104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259750 (or 259733 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21414432104 its reverse (40123441412), we get a palindrome (61537873516).

The spelling of 21414432104 in words is "twenty-one billion, four hundred fourteen million, four hundred thirty-two thousand, one hundred four".