6591660860929 has 3 divisors (see below), whose sum is σ = 6591663428353. Its totient is φ = 6591658293506.

The previous prime is 6591660860927. The next prime is 6591660860947. The reversal of 6591660860929 is 9290680661956.

The square root of 6591660860929 is 2567423.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 6591660860929 - 2¹ = 6591660860927 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6591660860921) 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, 1283712 + ... + 3851134.

Almost surely, 2^{6591660860929} is an apocalyptic number.

6591660860929 is the 2567423-rd square number.

6591660860929 is the 1283712-nd centered octagonal number.

It is an amenable number.

6591660860929 is a deficient number, since it is larger than the sum of its proper divisors (2567424).

6591660860929 is an frugal number, since it uses more digits than its factorization.

6591660860929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5134846 (or 2567423 counting only the distinct ones).

The product of its (nonzero) digits is 75582720, while the sum is 67.

The spelling of 6591660860929 in words is "six trillion, five hundred ninety-one billion, six hundred sixty million, eight hundred sixty thousand, nine hundred twenty-nine".