21417422076 has 72 divisors (see below), whose sum is σ = 54614239680. Its totient is φ = 7076560896.

The previous prime is 21417422071. The next prime is 21417422077. The reversal of 21417422076 is 67022471412.

21417422076 is a `hidden beast` number, since 214 + 17 + 422 + 0 + 7 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 21417422076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21417422071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3789885 + ... + 3795531.

Almost surely, 2^21417422076 is an apocalyptic number.

It is an amenable number.

21417422076 is an abundant number, since it is smaller than the sum of its proper divisors (33196817604).

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

21417422076 is a wasteful number, since it uses less digits than its factorization.

21417422076 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6563 (or 6558 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

Adding to 21417422076 its reverse (67022471412), we get a palindrome (88439893488).

The spelling of 21417422076 in words is "twenty-one billion, four hundred seventeen million, four hundred twenty-two thousand, seventy-six".