21000356066334 has 32 divisors (see below), whose sum is σ = 43147210838400. Its totient is φ = 6809135082912.

The previous prime is 21000356066317. The next prime is 21000356066363. The reversal of 21000356066334 is 43366065300012.

It is a super-2 number, since 2×21000356066334² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21000356066292 and 21000356066301.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11592784 + ... + 13281315.

It is an arithmetic number, because the mean of its divisors is an integer number (1348350338700).

Almost surely, 2^{21000356066334} is an apocalyptic number.

21000356066334 is an abundant number, since it is smaller than the sum of its proper divisors (22146854772066).

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

21000356066334 is a wasteful number, since it uses less digits than its factorization.

21000356066334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24877944.

The product of its (nonzero) digits is 233280, while the sum is 39.

The spelling of 21000356066334 in words is "twenty-one trillion, three hundred fifty-six million, sixty-six thousand, three hundred thirty-four".