56111855500801 has 4 divisors (see below), whose sum is σ = 56111961906004. Its totient is φ = 56111749095600.

The previous prime is 56111855500763. The next prime is 56111855500807. The reversal of 56111855500801 is 10800555811165.

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 52523009420176 + 3588846080625 = 7247276^2 + 1894425^2 .

It is a cyclic number.

It is not a de Polignac number, because 56111855500801 - 2⁹ = 56111855500289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56111855500807) 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, 52407630 + ... + 53467591.

It is an arithmetic number, because the mean of its divisors is an integer number (14027990476501).

Almost surely, 2^{56111855500801} is an apocalyptic number.

It is an amenable number.

56111855500801 is a deficient number, since it is larger than the sum of its proper divisors (106405203).

56111855500801 is a wasteful number, since it uses less digits than its factorization.

56111855500801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106405202.

The product of its (nonzero) digits is 240000, while the sum is 46.

The spelling of 56111855500801 in words is "fifty-six trillion, one hundred eleven billion, eight hundred fifty-five million, five hundred thousand, eight hundred one".