2666143402 has 16 divisors (see below), whose sum is σ = 4312568232. Its totient is φ = 1228893120.

The previous prime is 2666143397. The next prime is 2666143421. The reversal of 2666143402 is 2043416662.

It can be written as a sum of positive squares in 4 ways, for example, as 1480787361 + 1185356041 = 38481^2 + 34429^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48049 + ... + 87412.

Almost surely, 2^2666143402 is an apocalyptic number.

2666143402 is a deficient number, since it is larger than the sum of its proper divisors (1646424830).

2666143402 is a wasteful number, since it uses less digits than its factorization.

2666143402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136233.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 2666143402 is about 51634.7112125167. The cubic root of 2666143402 is about 1386.6318399039.

The spelling of 2666143402 in words is "two billion, six hundred sixty-six million, one hundred forty-three thousand, four hundred two".