2660286251338 has 4 divisors (see below), whose sum is σ = 3990429377010. Its totient is φ = 1330143125668.

The previous prime is 2660286251327. The next prime is 2660286251351. The reversal of 2660286251338 is 8331526820662.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1507598432649 + 1152687818689 = 1227843^2 + 1073633^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 665071562833 + ... + 665071562836.

Almost surely, 2^{2660286251338} is an apocalyptic number.

2660286251338 is a deficient number, since it is larger than the sum of its proper divisors (1330143125672).

2660286251338 is a wasteful number, since it uses less digits than its factorization.

2660286251338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1330143125671.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 2660286251338 in words is "two trillion, six hundred sixty billion, two hundred eighty-six million, two hundred fifty-one thousand, three hundred thirty-eight".