20794387807744 has 80 divisors (see below), whose sum is σ = 43448659420320. Its totient is φ = 9923566428160.

The previous prime is 20794387807741. The next prime is 20794387807759. The reversal of 20794387807744 is 44770878349702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20794387807741) 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, 3513522 + ... + 7343950.

It is an arithmetic number, because the mean of its divisors is an integer number (543108242754).

Almost surely, 2^{20794387807744} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20794387807744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21724329710160).

20794387807744 is an abundant number, since it is smaller than the sum of its proper divisors (22654271612576).

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

20794387807744 is an equidigital number, since it uses as much as digits as its factorization.

20794387807744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3830931 (or 3830915 counting only the distinct ones).

The product of its (nonzero) digits is 531062784, while the sum is 70.

The spelling of 20794387807744 in words is "twenty trillion, seven hundred ninety-four billion, three hundred eighty-seven million, eight hundred seven thousand, seven hundred forty-four".