2661344426 has 8 divisors (see below), whose sum is σ = 4299094884. Its totient is φ = 1228312800.

The previous prime is 2661344419. The next prime is 2661344431. The reversal of 2661344426 is 6244431662.

It can be written as a sum of positive squares in 2 ways, for example, as 2631587401 + 29757025 = 51299^2 + 5455^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 2661344426.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51179675 + ... + 51179726.

Almost surely, 2^2661344426 is an apocalyptic number.

2661344426 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2661344426 is a deficient number, since it is larger than the sum of its proper divisors (1637750458).

2661344426 is a wasteful number, since it uses less digits than its factorization.

2661344426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102359416.

The product of its digits is 165888, while the sum is 38.

The square root of 2661344426 is about 51588.2198374784. The cubic root of 2661344426 is about 1385.7993753670.

The spelling of 2661344426 in words is "two billion, six hundred sixty-one million, three hundred forty-four thousand, four hundred twenty-six".