21726462712 has 8 divisors (see below), whose sum is σ = 40737117600. Its totient is φ = 10863231352.

The previous prime is 21726462697. The next prime is 21726462731.

21726462712 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1357903912 + ... + 1357903927.

It is an arithmetic number, because the mean of its divisors is an integer number (5092139700).

Almost surely, 2^21726462712 is an apocalyptic number.

It is an amenable number.

21726462712 is a deficient number, since it is larger than the sum of its proper divisors (19010654888).

21726462712 is a wasteful number, since it uses less digits than its factorization.

21726462712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2715807845 (or 2715807841 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The spelling of 21726462712 in words is "twenty-one billion, seven hundred twenty-six million, four hundred sixty-two thousand, seven hundred twelve".