56387221335873 has 48 divisors (see below), whose sum is σ = 85146601123584. Its totient is φ = 35890595220480.

The previous prime is 56387221335853. The next prime is 56387221335943. The reversal of 56387221335873 is 37853312278365.

56387221335873 is a `hidden beast` number, since 5 + 6 + 3 + 8 + 7 + 221 + 335 + 8 + 73 = 666.

It is not a de Polignac number, because 56387221335873 - 2³⁷ = 56249782382401 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56387221335873.

It is not an unprimeable number, because it can be changed into a prime (56387221335803) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 829885540 + ... + 829953482.

It is an arithmetic number, because the mean of its divisors is an integer number (1773887523408).

Almost surely, 2^{56387221335873} is an apocalyptic number.

It is an amenable number.

56387221335873 is a deficient number, since it is larger than the sum of its proper divisors (28759379787711).

56387221335873 is a wasteful number, since it uses less digits than its factorization.

56387221335873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75326 (or 75323 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 63.

The spelling of 56387221335873 in words is "fifty-six trillion, three hundred eighty-seven billion, two hundred twenty-one million, three hundred thirty-five thousand, eight hundred seventy-three".