56278366387265 has 16 divisors (see below), whose sum is σ = 73692779299776. Its totient is φ = 40919009073600.

The previous prime is 56278366387249. The next prime is 56278366387267.

It is a happy number.

56278366387265 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56278366387265 - 2⁴ = 56278366387249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56278366387192 and 56278366387201.

It is not an unprimeable number, because it can be changed into a prime (56278366387267) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133687127 + ... + 134107436.

It is an arithmetic number, because the mean of its divisors is an integer number (4605798706236).

Almost surely, 2^{56278366387265} is an apocalyptic number.

56278366387265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56278366387265 is a deficient number, since it is larger than the sum of its proper divisors (17414412912511).

56278366387265 is a wasteful number, since it uses less digits than its factorization.

56278366387265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267798400.

The product of its digits is 3657830400, while the sum is 74.

The spelling of 56278366387265 in words is "fifty-six trillion, two hundred seventy-eight billion, three hundred sixty-six million, three hundred eighty-seven thousand, two hundred sixty-five".