56191135279 has 4 divisors (see below), whose sum is σ = 56716286184. Its totient is φ = 55665984376.

The previous prime is 56191135261. The next prime is 56191135289. The reversal of 56191135279 is 97253119165.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56191135279 - 2¹⁹ = 56190610991 is a prime.

It is a Smith number, since the sum of its digits (49) 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 not an unprimeable number, because it can be changed into a prime (56191135229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 262575292 + ... + 262575505.

It is an arithmetic number, because the mean of its divisors is an integer number (14179071546).

Almost surely, 2^56191135279 is an apocalyptic number.

56191135279 is a deficient number, since it is larger than the sum of its proper divisors (525150905).

56191135279 is a wasteful number, since it uses less digits than its factorization.

56191135279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525150904.

The product of its digits is 510300, while the sum is 49.

The spelling of 56191135279 in words is "fifty-six billion, one hundred ninety-one million, one hundred thirty-five thousand, two hundred seventy-nine".