56812722721865 has 24 divisors (see below), whose sum is σ = 74937582117384. Its totient is φ = 41317720012800.

The previous prime is 56812722721841. The next prime is 56812722721889.

56812722721865 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (56812722721841) and next prime (56812722721889).

It can be written as a sum of positive squares in 4 ways, for example, as 300096891721 + 56512625830144 = 547811^2 + 7517488^2 .

It is not a de Polignac number, because 56812722721865 - 2⁶ = 56812722721801 is a prime.

It is a super-3 number, since 3×56812722721865³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56812722721798 and 56812722721807.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41470889 + ... + 42818921.

It is an arithmetic number, because the mean of its divisors is an integer number (3122399254891).

Almost surely, 2^{56812722721865} is an apocalyptic number.

56812722721865 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56812722721865 is a deficient number, since it is larger than the sum of its proper divisors (18124859395519).

56812722721865 is a wasteful number, since it uses less digits than its factorization.

56812722721865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1417721 (or 1417710 counting only the distinct ones).

The product of its digits is 45158400, while the sum is 62.

The spelling of 56812722721865 in words is "fifty-six trillion, eight hundred twelve billion, seven hundred twenty-two million, seven hundred twenty-one thousand, eight hundred sixty-five".