21707336357552 has 40 divisors (see below), whose sum is σ = 42475658117520. Its totient is φ = 10745882668800.

The previous prime is 21707336357431. The next prime is 21707336357647. The reversal of 21707336357552 is 25575363370712.

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, 58837274 + ... + 59205062.

It is an arithmetic number, because the mean of its divisors is an integer number (1061891452938).

Almost surely, 2^{21707336357552} is an apocalyptic number.

It is an amenable number.

21707336357552 is a deficient number, since it is larger than the sum of its proper divisors (20768321759968).

21707336357552 is a wasteful number, since it uses less digits than its factorization.

21707336357552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404421 (or 404415 counting only the distinct ones).

The product of its (nonzero) digits is 27783000, while the sum is 56.

The spelling of 21707336357552 in words is "twenty-one trillion, seven hundred seven billion, three hundred thirty-six million, three hundred fifty-seven thousand, five hundred fifty-two".