2561732371652 has 12 divisors (see below), whose sum is σ = 4483044358800. Its totient is φ = 1280862554856.

The previous prime is 2561732371631. The next prime is 2561732371661.

2561732371652 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2561732371652.

It is an unprimeable number.

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, 1249103 + ... + 2585289.

It is an arithmetic number, because the mean of its divisors is an integer number (373587029900).

Almost surely, 2^{2561732371652} is an apocalyptic number.

It is an amenable number.

2561732371652 is a deficient number, since it is larger than the sum of its proper divisors (1921311987148).

2561732371652 is a wasteful number, since it uses less digits than its factorization.

2561732371652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815490 (or 1815488 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 50.

The spelling of 2561732371652 in words is "two trillion, five hundred sixty-one billion, seven hundred thirty-two million, three hundred seventy-one thousand, six hundred fifty-two".