6356666265049 has 9 divisors (see below), whose sum is σ = 6708886699167. Its totient is φ = 6022059500304.

The previous prime is 6356666265041. The next prime is 6356666265067. The reversal of 6356666265049 is 9405626666536.

It is a happy number.

The square root of 6356666265049 is 2521243.

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., 16181112025 + 6340485153024 = 127205^2 + 2518032^2 .

It is not a de Polignac number, because 6356666265049 - 2³ = 6356666265041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6356666265041) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 47837269 + ... + 47969965.

It is an arithmetic number, because the mean of its divisors is an integer number (745431855463).

Almost surely, 2^{6356666265049} is an apocalyptic number.

6356666265049 is the 2521243-rd square number.

6356666265049 is the 1260622-nd centered octagonal number.

It is an amenable number.

6356666265049 is a deficient number, since it is larger than the sum of its proper divisors (352220434118).

6356666265049 is an frugal number, since it uses more digits than its factorization.

6356666265049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265432 (or 132716 counting only the distinct ones).

The product of its (nonzero) digits is 251942400, while the sum is 64.

Multiplying 6356666265049 by its sum of digits (64), we get a square (406826640963136 = 20169944²).

The spelling of 6356666265049 in words is "six trillion, three hundred fifty-six billion, six hundred sixty-six million, two hundred sixty-five thousand, forty-nine".