21702462126 has 8 divisors (see below), whose sum is σ = 43404924264. Its totient is φ = 7234154040.

The previous prime is 21702462097. The next prime is 21702462137. The reversal of 21702462126 is 62126420712.

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

21702462126 is an admirable number.

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, 1808538505 + ... + 1808538516.

It is an arithmetic number, because the mean of its divisors is an integer number (5425615533).

Almost surely, 2^21702462126 is an apocalyptic number.

21702462126 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

21702462126 is a wasteful number, since it uses less digits than its factorization.

21702462126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3617077026.

The product of its (nonzero) digits is 16128, while the sum is 33.

Adding to 21702462126 its reverse (62126420712), we get a palindrome (83828882838).

The spelling of 21702462126 in words is "twenty-one billion, seven hundred two million, four hundred sixty-two thousand, one hundred twenty-six".