2666859351764 has 12 divisors (see below), whose sum is σ = 4667216185044. Its totient is φ = 1333369013184.

The previous prime is 2666859351733. The next prime is 2666859351809. The reversal of 2666859351764 is 4671539586662.

It can be written as a sum of positive squares in 2 ways, for example, as 1926244203664 + 740615148100 = 1387892^2 + 860590^2 .

It is a super-2 number, since 2×2666859351764² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2666859351694 and 2666859351703.

It is a congruent number.

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, 15066689 + ... + 15242664.

It is an arithmetic number, because the mean of its divisors is an integer number (388934682087).

Almost surely, 2^{2666859351764} is an apocalyptic number.

It is an amenable number.

2666859351764 is a deficient number, since it is larger than the sum of its proper divisors (2000356833280).

2666859351764 is a wasteful number, since it uses less digits than its factorization.

2666859351764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30331354 (or 30331352 counting only the distinct ones).

The product of its digits is 391910400, while the sum is 68.

The spelling of 2666859351764 in words is "two trillion, six hundred sixty-six billion, eight hundred fifty-nine million, three hundred fifty-one thousand, seven hundred sixty-four".