20009874774464 has 28 divisors (see below), whose sum is σ = 40185494004264. Its totient is φ = 9884395970304.

The previous prime is 20009874774413. The next prime is 20009874774467. The reversal of 20009874774464 is 46447747890002.

It is a junction number, because it is equal to n+sod(n) for n = 20009874774397 and 20009874774406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20009874774467) 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, 1883454287 + ... + 1883464910.

It is an arithmetic number, because the mean of its divisors is an integer number (1435196214438).

Almost surely, 2^{20009874774464} is an apocalyptic number.

It is an amenable number.

20009874774464 is an abundant number, since it is smaller than the sum of its proper divisors (20175619229800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20009874774464 is an equidigital number, since it uses as much as digits as its factorization.

20009874774464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3766919292 (or 3766919282 counting only the distinct ones).

The product of its (nonzero) digits is 75866112, while the sum is 62.

The spelling of 20009874774464 in words is "twenty trillion, nine billion, eight hundred seventy-four million, seven hundred seventy-four thousand, four hundred sixty-four".