21683353535002 has 4 divisors (see below), whose sum is σ = 32525030302506. Its totient is φ = 10841676767500.

The previous prime is 21683353534993. The next prime is 21683353535033. The reversal of 21683353535002 is 20053535338612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 21553558341561 + 129795193441 = 4642581^2 + 360271^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5420838383749 + ... + 5420838383752.

Almost surely, 2^{21683353535002} is an apocalyptic number.

21683353535002 is a deficient number, since it is larger than the sum of its proper divisors (10841676767504).

21683353535002 is a wasteful number, since it uses less digits than its factorization.

21683353535002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10841676767503.

The product of its (nonzero) digits is 1944000, while the sum is 46.

The spelling of 21683353535002 in words is "twenty-one trillion, six hundred eighty-three billion, three hundred fifty-three million, five hundred thirty-five thousand, two".