42856056249553 has 4 divisors (see below), whose sum is σ = 43558614548788. Its totient is φ = 42153497950320.

The previous prime is 42856056249521. The next prime is 42856056249577. The reversal of 42856056249553 is 35594265065824.

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 14999067816769 + 27856988432784 = 3872863^2 + 5277972^2 .

It is a cyclic number.

It is not a de Polignac number, because 42856056249553 - 2⁵ = 42856056249521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42856056249653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351279149526 + ... + 351279149647.

It is an arithmetic number, because the mean of its divisors is an integer number (10889653637197).

Almost surely, 2^{42856056249553} is an apocalyptic number.

It is an amenable number.

42856056249553 is a deficient number, since it is larger than the sum of its proper divisors (702558299235).

42856056249553 is an equidigital number, since it uses as much as digits as its factorization.

42856056249553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702558299234.

The product of its (nonzero) digits is 311040000, while the sum is 64.

The spelling of 42856056249553 in words is "forty-two trillion, eight hundred fifty-six billion, fifty-six million, two hundred forty-nine thousand, five hundred fifty-three".