56873637865 has 12 divisors (see below), whose sum is σ = 75016799172. Its totient is φ = 41362645280.

The previous prime is 56873637791. The next prime is 56873637869.

56873637865 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 28980295696 + 27893342169 = 170236^2 + 167013^2 .

It is not a de Polignac number, because 56873637865 - 2¹¹ = 56873635817 is a prime.

It is a super-2 number, since 2×56873637865² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56873637797 and 56873637806.

It is not an unprimeable number, because it can be changed into a prime (56873637869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 47002402 + ... + 47003611.

It is an arithmetic number, because the mean of its divisors is an integer number (6251399931).

Almost surely, 2^56873637865 is an apocalyptic number.

56873637865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56873637865 is a deficient number, since it is larger than the sum of its proper divisors (18143161307).

56873637865 is a wasteful number, since it uses less digits than its factorization.

56873637865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94006040 (or 94006029 counting only the distinct ones).

The product of its digits is 152409600, while the sum is 64.

The spelling of 56873637865 in words is "fifty-six billion, eight hundred seventy-three million, six hundred thirty-seven thousand, eight hundred sixty-five".