20844543470 has 16 divisors (see below), whose sum is σ = 37653707088. Its totient is φ = 8308144320.

The previous prime is 20844543409. The next prime is 20844543491. The reversal of 20844543470 is 7434544802.

It is a congruent number.

It is an unprimeable number.

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, 3706184 + ... + 3711803.

It is an arithmetic number, because the mean of its divisors is an integer number (2353356693).

Almost surely, 2^20844543470 is an apocalyptic number.

20844543470 is a deficient number, since it is larger than the sum of its proper divisors (16809163618).

20844543470 is a wasteful number, since it uses less digits than its factorization.

20844543470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7418275.

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 20844543470 in words is "twenty billion, eight hundred forty-four million, five hundred forty-three thousand, four hundred seventy".