2666261372 has 6 divisors (see below), whose sum is σ = 4665957408. Its totient is φ = 1333130684.

The previous prime is 2666261369. The next prime is 2666261401. The reversal of 2666261372 is 2731626662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333282668 + ... + 333282675.

It is an arithmetic number, because the mean of its divisors is an integer number (777659568).

Almost surely, 2^2666261372 is an apocalyptic number.

It is an amenable number.

2666261372 is a deficient number, since it is larger than the sum of its proper divisors (1999696036).

2666261372 is a wasteful number, since it uses less digits than its factorization.

2666261372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666565347 (or 666565345 counting only the distinct ones).

The product of its digits is 217728, while the sum is 41.

The square root of 2666261372 is about 51635.8535515779. The cubic root of 2666261372 is about 1386.6522912351.

The spelling of 2666261372 in words is "two billion, six hundred sixty-six million, two hundred sixty-one thousand, three hundred seventy-two".