20574086664440 has 32 divisors (see below), whose sum is σ = 46305419489280. Its totient is φ = 8227194755712.

The previous prime is 20574086664389. The next prime is 20574086664451. The reversal of 20574086664440 is 4446668047502.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76110584 + ... + 76380423.

It is an arithmetic number, because the mean of its divisors is an integer number (1447044359040).

Almost surely, 2^{20574086664440} is an apocalyptic number.

20574086664440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20574086664440 is an abundant number, since it is smaller than the sum of its proper divisors (25731332824840).

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

20574086664440 is a wasteful number, since it uses less digits than its factorization.

20574086664440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152494391 (or 152494387 counting only the distinct ones).

The product of its (nonzero) digits is 30965760, while the sum is 56.

The spelling of 20574086664440 in words is "twenty trillion, five hundred seventy-four billion, eighty-six million, six hundred sixty-four thousand, four hundred forty".