20318966347792 has 160 divisors (see below), whose sum is σ = 48617454355200. Its totient is φ = 8194763888640.

The previous prime is 20318966347783. The next prime is 20318966347853. The reversal of 20318966347792 is 29774366981302.

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, 1196139523 + ... + 1196156509.

It is an arithmetic number, because the mean of its divisors is an integer number (303859089720).

Almost surely, 2^{20318966347792} 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 20318966347792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24308727177600).

20318966347792 is an abundant number, since it is smaller than the sum of its proper divisors (28298488007408).

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

20318966347792 is a wasteful number, since it uses less digits than its factorization.

20318966347792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29854 (or 29834 counting only the distinct ones).

The product of its (nonzero) digits is 164602368, while the sum is 67.

The spelling of 20318966347792 in words is "twenty trillion, three hundred eighteen billion, nine hundred sixty-six million, three hundred forty-seven thousand, seven hundred ninety-two".