2665979712 has 336 divisors, whose sum is σ = 9012399552. Its totient is φ = 744407040.

The previous prime is 2665979707. The next prime is 2665979713. The reversal of 2665979712 is 2179795662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2665979713) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5708503 + ... + 5708969.

Almost surely, 2^2665979712 is an apocalyptic number.

2665979712 is a gapful number since it is divisible by the number (22) 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 2665979712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4506199776).

2665979712 is an abundant number, since it is smaller than the sum of its proper divisors (6346419840).

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

2665979712 is a wasteful number, since it uses less digits than its factorization.

2665979712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 553 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 2665979712 is about 51633.1261110539. The cubic root of 2665979712 is about 1386.6034615340.

The spelling of 2665979712 in words is "two billion, six hundred sixty-five million, nine hundred seventy-nine thousand, seven hundred twelve".