2660669896336 has 15 divisors (see below), whose sum is σ = 5155060565641. Its totient is φ = 1330331685856.

The previous prime is 2660669896333. The next prime is 2660669896361. The reversal of 2660669896336 is 6336989660662.

It is a happy number.

The square root of 2660669896336 is 1631156.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2204865936 + 2658465030400 = 46956^2 + 1630480^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2660669896333) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6320730 + ... + 6728518.

Almost surely, 2^{2660669896336} is an apocalyptic number.

2660669896336 is the 1631156-th square number.

It is an amenable number.

2660669896336 is a deficient number, since it is larger than the sum of its proper divisors (2494390669305).

2660669896336 is an frugal number, since it uses more digits than its factorization.

2660669896336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815586 (or 407791 counting only the distinct ones).

The product of its (nonzero) digits is 544195584, while the sum is 70.

The spelling of 2660669896336 in words is "two trillion, six hundred sixty billion, six hundred sixty-nine million, eight hundred ninety-six thousand, three hundred thirty-six".