2666349982426 has 8 divisors (see below), whose sum is σ = 4307180740884. Its totient is φ = 1230623068800.

The previous prime is 2666349982357. The next prime is 2666349982427. The reversal of 2666349982426 is 6242899436662.

It can be written as a sum of positive squares in 2 ways, for example, as 2657959605625 + 8390376801 = 1630325^2 + 91599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2666349982427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51275961175 + ... + 51275961226.

Almost surely, 2^{2666349982426} is an apocalyptic number.

2666349982426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2666349982426 is a deficient number, since it is larger than the sum of its proper divisors (1640830758458).

2666349982426 is a wasteful number, since it uses less digits than its factorization.

2666349982426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102551922416.

The product of its digits is 322486272, while the sum is 67.

The spelling of 2666349982426 in words is "two trillion, six hundred sixty-six billion, three hundred forty-nine million, nine hundred eighty-two thousand, four hundred twenty-six".