21767271126 has 8 divisors (see below), whose sum is σ = 43534542264. Its totient is φ = 7255757040.

The previous prime is 21767271109. The next prime is 21767271151. The reversal of 21767271126 is 62117276712.

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

21767271126 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1813939255 + ... + 1813939266.

It is an arithmetic number, because the mean of its divisors is an integer number (5441817783).

Almost surely, 2^21767271126 is an apocalyptic number.

21767271126 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.

21767271126 is a wasteful number, since it uses less digits than its factorization.

21767271126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3627878526.

The product of its digits is 98784, while the sum is 42.

The spelling of 21767271126 in words is "twenty-one billion, seven hundred sixty-seven million, two hundred seventy-one thousand, one hundred twenty-six".