21032830726605 has 32 divisors (see below), whose sum is σ = 37416445758720. Its totient is φ = 11210085714240.

The previous prime is 21032830726529. The next prime is 21032830726613. The reversal of 21032830726605 is 50662703823012.

21032830726605 is a `hidden beast` number, since 2 + 1 + 0 + 3 + 2 + 8 + 30 + 7 + 2 + 6 + 605 = 666.

It is not a de Polignac number, because 21032830726605 - 2¹⁰ = 21032830725581 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51350862 + ... + 51758831.

It is an arithmetic number, because the mean of its divisors is an integer number (1169263929960).

Almost surely, 2^{21032830726605} is an apocalyptic number.

It is an amenable number.

21032830726605 is a deficient number, since it is larger than the sum of its proper divisors (16383615032115).

21032830726605 is a wasteful number, since it uses less digits than its factorization.

21032830726605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103111218 (or 103111212 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 21032830726605 in words is "twenty-one trillion, thirty-two billion, eight hundred thirty million, seven hundred twenty-six thousand, six hundred five".