20506608846744 has 128 divisors (see below), whose sum is σ = 55656347140800. Its totient is φ = 6270867292160.

The previous prime is 20506608846733. The next prime is 20506608846803. The reversal of 20506608846744 is 44764880660502.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 17998654 + ... + 19104050.

Almost surely, 2^{20506608846744} is an apocalyptic number.

20506608846744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20506608846744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27828173570400).

20506608846744 is an abundant number, since it is smaller than the sum of its proper divisors (35149738294056).

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

20506608846744 is a wasteful number, since it uses less digits than its factorization.

20506608846744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1106573 (or 1106569 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 60.

The spelling of 20506608846744 in words is "twenty trillion, five hundred six billion, six hundred eight million, eight hundred forty-six thousand, seven hundred forty-four".