56540044004564 has 24 divisors (see below), whose sum is σ = 102175294948608. Its totient is φ = 27347789041920.

The previous prime is 56540044004491. The next prime is 56540044004573. The reversal of 56540044004564 is 46540044004565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85475594 + ... + 86134529.

It is an arithmetic number, because the mean of its divisors is an integer number (4257303956192).

Almost surely, 2^{56540044004564} is an apocalyptic number.

It is an amenable number.

56540044004564 is a deficient number, since it is larger than the sum of its proper divisors (45635250944044).

56540044004564 is a wasteful number, since it uses less digits than its factorization.

56540044004564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171612815 (or 171612813 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 47.

Subtracting from 56540044004564 its reverse (46540044004565), we obtain a palindrome (9999999999999).

The spelling of 56540044004564 in words is "fifty-six trillion, five hundred forty billion, forty-four million, four thousand, five hundred sixty-four".