2666376240 has 80 divisors (see below), whose sum is σ = 9017208576. Its totient is φ = 646393600.

The previous prime is 2666376217. The next prime is 2666376241. The reversal of 2666376240 is 426736662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 2666376192 and 2666376201.

It is not an unprimeable number, because it can be changed into a prime (2666376241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 502356 + ... + 507635.

Almost surely, 2^2666376240 is an apocalyptic number.

2666376240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666376240 is an abundant number, since it is smaller than the sum of its proper divisors (6350832336).

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

2666376240 is a wasteful number, since it uses less digits than its factorization.

2666376240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010018 (or 1010012 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 42.

The square root of 2666376240 is about 51636.9658287549. The cubic root of 2666376240 is about 1386.6722042226.

The spelling of 2666376240 in words is "two billion, six hundred sixty-six million, three hundred seventy-six thousand, two hundred forty".