56081352388557 has 16 divisors (see below), whose sum is σ = 74803345398720. Its totient is φ = 37373466479232.

The previous prime is 56081352388549. The next prime is 56081352388583. The reversal of 56081352388557 is 75588325318065.

It is not a de Polignac number, because 56081352388557 - 2³ = 56081352388549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56081352388597) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85372083 + ... + 86026479.

It is an arithmetic number, because the mean of its divisors is an integer number (4675209087420).

Almost surely, 2^{56081352388557} is an apocalyptic number.

It is an amenable number.

56081352388557 is a deficient number, since it is larger than the sum of its proper divisors (18721993010163).

56081352388557 is a wasteful number, since it uses less digits than its factorization.

56081352388557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665132.

The product of its (nonzero) digits is 241920000, while the sum is 66.

The spelling of 56081352388557 in words is "fifty-six trillion, eighty-one billion, three hundred fifty-two million, three hundred eighty-eight thousand, five hundred fifty-seven".