21473074930 has 16 divisors (see below), whose sum is σ = 38660080320. Its totient is φ = 8587330992.

The previous prime is 21473074907. The next prime is 21473074933. The reversal of 21473074930 is 3947037412.

It is a super-2 number, since 2×21473074930² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21473074933) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189420 + ... + 280759.

It is an arithmetic number, because the mean of its divisors is an integer number (2416255020).

Almost surely, 2^21473074930 is an apocalyptic number.

21473074930 is a deficient number, since it is larger than the sum of its proper divisors (17187005390).

21473074930 is a wasteful number, since it uses less digits than its factorization.

21473074930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 474753.

The product of its (nonzero) digits is 127008, while the sum is 40.

The spelling of 21473074930 in words is "twenty-one billion, four hundred seventy-three million, seventy-four thousand, nine hundred thirty".