21734759776 has 48 divisors (see below), whose sum is σ = 43348147920. Its totient is φ = 10726144000.

The previous prime is 21734759713. The next prime is 21734759797. The reversal of 21734759776 is 67795743712.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21734759776.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1665276 + ... + 1678276.

It is an arithmetic number, because the mean of its divisors is an integer number (903086415).

Almost surely, 2^21734759776 is an apocalyptic number.

It is an amenable number.

21734759776 is a deficient number, since it is larger than the sum of its proper divisors (21613388144).

21734759776 is a wasteful number, since it uses less digits than its factorization.

21734759776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13687 (or 13679 counting only the distinct ones).

The product of its digits is 15558480, while the sum is 58.

The spelling of 21734759776 in words is "twenty-one billion, seven hundred thirty-four million, seven hundred fifty-nine thousand, seven hundred seventy-six".