21334997706 has 16 divisors (see below), whose sum is σ = 46549086048. Its totient is φ = 6465150800.

The previous prime is 21334997689. The next prime is 21334997713. The reversal of 21334997706 is 60779943312.

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, 161628705 + ... + 161628836.

It is an arithmetic number, because the mean of its divisors is an integer number (2909317878).

Almost surely, 2^21334997706 is an apocalyptic number.

21334997706 is an abundant number, since it is smaller than the sum of its proper divisors (25214088342).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21334997706 is a wasteful number, since it uses less digits than its factorization.

21334997706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323257557.

The product of its (nonzero) digits is 1714608, while the sum is 51.

The spelling of 21334997706 in words is "twenty-one billion, three hundred thirty-four million, nine hundred ninety-seven thousand, seven hundred six".