21003350594 has 16 divisors (see below), whose sum is σ = 31551962400. Its totient is φ = 10486043904.

The previous prime is 21003350579. The next prime is 21003350629. The reversal of 21003350594 is 49505330012.

It is a super-2 number, since 2×21003350594² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 21003350594.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6693794 + ... + 6696930.

It is an arithmetic number, because the mean of its divisors is an integer number (1971997650).

Almost surely, 2^21003350594 is an apocalyptic number.

21003350594 is a deficient number, since it is larger than the sum of its proper divisors (10548611806).

21003350594 is a wasteful number, since it uses less digits than its factorization.

21003350594 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7057.

The product of its (nonzero) digits is 16200, while the sum is 32.

The spelling of 21003350594 in words is "twenty-one billion, three million, three hundred fifty thousand, five hundred ninety-four".