2660743878 has 32 divisors (see below), whose sum is σ = 5781567456. Its totient is φ = 811442688.

The previous prime is 2660743859. The next prime is 2660743879. The reversal of 2660743878 is 8783470662.

It is a self number, because there is not a number n which added to its sum of digits gives 2660743878.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2660743879) 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 15 ways as a sum of consecutive naturals, for example, 142125 + ... + 159752.

It is an arithmetic number, because the mean of its divisors is an integer number (180673983).

Almost surely, 2^2660743878 is an apocalyptic number.

2660743878 is an abundant number, since it is smaller than the sum of its proper divisors (3120823578).

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

2660743878 is a wasteful number, since it uses less digits than its factorization.

2660743878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302008.

The product of its (nonzero) digits is 2709504, while the sum is 51.

The square root of 2660743878 is about 51582.3989166847. The cubic root of 2660743878 is about 1385.6951296027.

The spelling of 2660743878 in words is "two billion, six hundred sixty million, seven hundred forty-three thousand, eight hundred seventy-eight".