56387138485 has 4 divisors (see below), whose sum is σ = 67664566188. Its totient is φ = 45109710784.

The previous prime is 56387138471. The next prime is 56387138503. The reversal of 56387138485 is 58483178365.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 43413472881 + 12973665604 = 208359^2 + 113902^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56387138485 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5638713844 + ... + 5638713853.

It is an arithmetic number, because the mean of its divisors is an integer number (16916141547).

Almost surely, 2^56387138485 is an apocalyptic number.

It is an amenable number.

56387138485 is a deficient number, since it is larger than the sum of its proper divisors (11277427703).

56387138485 is a wasteful number, since it uses less digits than its factorization.

56387138485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11277427702.

The product of its digits is 19353600, while the sum is 58.

The spelling of 56387138485 in words is "fifty-six billion, three hundred eighty-seven million, one hundred thirty-eight thousand, four hundred eighty-five".