2947981479808 has 64 divisors (see below), whose sum is σ = 6081877002240. Its totient is φ = 1421855424000.

The previous prime is 2947981479731. The next prime is 2947981479809. The reversal of 2947981479808 is 8089741897492.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2947981479809) by changing a digit.

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, 39613 + ... + 2428483.

It is an arithmetic number, because the mean of its divisors is an integer number (95029328160).

Almost surely, 2^{2947981479808} 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 2947981479808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3040938501120).

2947981479808 is an abundant number, since it is smaller than the sum of its proper divisors (3133895522432).

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

2947981479808 is a wasteful number, since it uses less digits than its factorization.

2947981479808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2389227 (or 2389215 counting only the distinct ones).

The product of its (nonzero) digits is 585252864, while the sum is 76.

The spelling of 2947981479808 in words is "two trillion, nine hundred forty-seven billion, nine hundred eighty-one million, four hundred seventy-nine thousand, eight hundred eight".