21767876713 has 8 divisors (see below), whose sum is σ = 24299025696. Its totient is φ = 19328769600.

The previous prime is 21767876671. The next prime is 21767876759. The reversal of 21767876713 is 31767876712.

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

It is a cyclic number.

It is not a de Polignac number, because 21767876713 - 2¹⁷ = 21767745641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21767876783) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23009968 + ... + 23010913.

It is an arithmetic number, because the mean of its divisors is an integer number (3037378212).

Almost surely, 2^21767876713 is an apocalyptic number.

It is an amenable number.

21767876713 is a deficient number, since it is larger than the sum of its proper divisors (2531148983).

21767876713 is a wasteful number, since it uses less digits than its factorization.

21767876713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46020935.

The product of its digits is 4148928, while the sum is 55.

Subtracting 21767876713 from its reverse (31767876712), we obtain a palindrome (9999999999).

The spelling of 21767876713 in words is "twenty-one billion, seven hundred sixty-seven million, eight hundred seventy-six thousand, seven hundred thirteen".