56187278165 has 16 divisors (see below), whose sum is σ = 69038251776. Its totient is φ = 43886438400.

The previous prime is 56187278159. The next prime is 56187278171.

56187278165 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (56187278159) and next prime (56187278171).

It is not a de Polignac number, because 56187278165 - 2⁶ = 56187278101 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56187278165.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 731756 + ... + 804885.

It is an arithmetic number, because the mean of its divisors is an integer number (4314890736).

Almost surely, 2^56187278165 is an apocalyptic number.

It is an amenable number.

56187278165 is a deficient number, since it is larger than the sum of its proper divisors (12850973611).

56187278165 is a wasteful number, since it uses less digits than its factorization.

56187278165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536820.

The product of its digits is 5644800, while the sum is 56.

The spelling of 56187278165 in words is "fifty-six billion, one hundred eighty-seven million, two hundred seventy-eight thousand, one hundred sixty-five".