20845254574 has 16 divisors (see below), whose sum is σ = 31348410912. Its totient is φ = 10395809568.

The previous prime is 20845254571. The next prime is 20845254593. The reversal of 20845254574 is 47545254802.

It is a super-3 number, since 3×20845254574³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20845254571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2060272 + ... + 2070364.

It is an arithmetic number, because the mean of its divisors is an integer number (1959275682).

Almost surely, 2^20845254574 is an apocalyptic number.

20845254574 is a deficient number, since it is larger than the sum of its proper divisors (10503156338).

20845254574 is a wasteful number, since it uses less digits than its factorization.

20845254574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12651.

The product of its (nonzero) digits is 1792000, while the sum is 46.

The spelling of 20845254574 in words is "twenty billion, eight hundred forty-five million, two hundred fifty-four thousand, five hundred seventy-four".