2565573600461 has 4 divisors (see below), whose sum is σ = 2572967184672. Its totient is φ = 2558180016252.

The previous prime is 2565573600449. The next prime is 2565573600503. The reversal of 2565573600461 is 1640063755652.

It is a happy number.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2565573600461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2565573600761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3696791585 + ... + 3696792278.

It is an arithmetic number, because the mean of its divisors is an integer number (643241796168).

Almost surely, 2^{2565573600461} is an apocalyptic number.

It is an amenable number.

2565573600461 is a deficient number, since it is larger than the sum of its proper divisors (7393584211).

2565573600461 is an equidigital number, since it uses as much as digits as its factorization.

2565573600461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7393584210.

The product of its (nonzero) digits is 4536000, while the sum is 50.

The spelling of 2565573600461 in words is "two trillion, five hundred sixty-five billion, five hundred seventy-three million, six hundred thousand, four hundred sixty-one".