21574724930 has 16 divisors (see below), whose sum is σ = 42364914624. Its totient is φ = 7845354480.

The previous prime is 21574724909. The next prime is 21574724959. The reversal of 21574724930 is 3942747512.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98066822 + ... + 98067041.

It is an arithmetic number, because the mean of its divisors is an integer number (2647807164).

Almost surely, 2^21574724930 is an apocalyptic number.

21574724930 is a deficient number, since it is larger than the sum of its proper divisors (20790189694).

21574724930 is a wasteful number, since it uses less digits than its factorization.

21574724930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196133881.

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 21574724930 in words is "twenty-one billion, five hundred seventy-four million, seven hundred twenty-four thousand, nine hundred thirty".