21286741076 has 12 divisors (see below), whose sum is σ = 37364342400. Its totient is φ = 10611214680.

The previous prime is 21286741061. The next prime is 21286741081. The reversal of 21286741076 is 67014768212.

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, 8037476 + ... + 8040123.

It is an arithmetic number, because the mean of its divisors is an integer number (3113695200).

Almost surely, 2^21286741076 is an apocalyptic number.

It is an amenable number.

21286741076 is a deficient number, since it is larger than the sum of its proper divisors (16077601324).

21286741076 is a wasteful number, since it uses less digits than its factorization.

21286741076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16077934 (or 16077932 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 44.

The spelling of 21286741076 in words is "twenty-one billion, two hundred eighty-six million, seven hundred forty-one thousand, seventy-six".