2666996712 has 128 divisors (see below), whose sum is σ = 8050176000. Its totient is φ = 815002560.

The previous prime is 2666996711. The next prime is 2666996713. The reversal of 2666996712 is 2176996662.

It is an interprime number because it is at equal distance from previous prime (2666996711) and next prime (2666996713).

It is a super-2 number, since 2×2666996712² = 14225742923637621888, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (2666996711) 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 31 ways as a sum of consecutive naturals, for example, 116743 + ... + 137705.

It is an arithmetic number, because the mean of its divisors is an integer number (62892000).

Almost surely, 2^2666996712 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 2666996712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4025088000).

2666996712 is an abundant number, since it is smaller than the sum of its proper divisors (5383179288).

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

2666996712 is a wasteful number, since it uses less digits than its factorization.

2666996712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21028 (or 21018 counting only the distinct ones).

The product of its digits is 2939328, while the sum is 54.

The square root of 2666996712 is about 51642.9735007581. The cubic root of 2666996712 is about 1386.7797565044.

The spelling of 2666996712 in words is "two billion, six hundred sixty-six million, nine hundred ninety-six thousand, seven hundred twelve".