21092845574 has 8 divisors (see below), whose sum is σ = 33500401848. Its totient is φ = 9926044960.

The previous prime is 21092845567. The next prime is 21092845577. The reversal of 21092845574 is 47554829012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21092845574² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21092845577) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 310188872 + ... + 310188939.

It is an arithmetic number, because the mean of its divisors is an integer number (4187550231).

Almost surely, 2^21092845574 is an apocalyptic number.

21092845574 is a deficient number, since it is larger than the sum of its proper divisors (12407556274).

21092845574 is a wasteful number, since it uses less digits than its factorization.

21092845574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620377830.

The product of its (nonzero) digits is 806400, while the sum is 47.

The spelling of 21092845574 in words is "twenty-one billion, ninety-two million, eight hundred forty-five thousand, five hundred seventy-four".