2564352669 has 4 divisors (see below), whose sum is σ = 3419136896. Its totient is φ = 1709568444.

The previous prime is 2564352649. The next prime is 2564352671. The reversal of 2564352669 is 9662534652.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2564352669 - 2¹² = 2564348573 is a prime.

It is a super-2 number, since 2×2564352669² = 13151809222014847122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2564352649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427392109 + ... + 427392114.

It is an arithmetic number, because the mean of its divisors is an integer number (854784224).

Almost surely, 2^2564352669 is an apocalyptic number.

It is an amenable number.

2564352669 is a deficient number, since it is larger than the sum of its proper divisors (854784227).

2564352669 is an equidigital number, since it uses as much as digits as its factorization.

2564352669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 854784226.

The product of its digits is 2332800, while the sum is 48.

The square root of 2564352669 is about 50639.4378819513. The cubic root of 2564352669 is about 1368.7556266068.

The spelling of 2564352669 in words is "two billion, five hundred sixty-four million, three hundred fifty-two thousand, six hundred sixty-nine".