2668378738662 has 96 divisors (see below), whose sum is σ = 7249934922048. Its totient is φ = 690469947648.

The previous prime is 2668378738633. The next prime is 2668378738673.

2668378738662 is a `hidden beast` number, since 26 + 68 + 37 + 87 + 386 + 62 = 666.

2668378738662 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15281553 + ... + 15455180.

It is an arithmetic number, because the mean of its divisors is an integer number (75520155438).

Almost surely, 2^{2668378738662} is an apocalyptic number.

2668378738662 is an abundant number, since it is smaller than the sum of its proper divisors (4581556183386).

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

2668378738662 is a wasteful number, since it uses less digits than its factorization.

2668378738662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30736814 (or 30736811 counting only the distinct ones).

The product of its digits is 1170505728, while the sum is 72.

The spelling of 2668378738662 in words is "two trillion, six hundred sixty-eight billion, three hundred seventy-eight million, seven hundred thirty-eight thousand, six hundred sixty-two".