2561313664024 has 8 divisors (see below), whose sum is σ = 4802463120060. Its totient is φ = 1280656832008.

The previous prime is 2561313664009. The next prime is 2561313664031. The reversal of 2561313664024 is 4204663131652.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 160082103994 + ... + 160082104009.

Almost surely, 2^{2561313664024} is an apocalyptic number.

It is an amenable number.

2561313664024 is a deficient number, since it is larger than the sum of its proper divisors (2241149456036).

2561313664024 is a wasteful number, since it uses less digits than its factorization.

2561313664024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320164208009 (or 320164208005 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 43.

Adding to 2561313664024 its reverse (4204663131652), we get a palindrome (6765976795676).

The spelling of 2561313664024 in words is "two trillion, five hundred sixty-one billion, three hundred thirteen million, six hundred sixty-four thousand, twenty-four".