56278699687265 has 16 divisors (see below), whose sum is σ = 73779032523456. Its totient is φ = 40871575416000.

The previous prime is 56278699687247. The next prime is 56278699687267.

56278699687265 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56278699687265 - 2⁶ = 56278699687201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56278699687267) 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, 729811007 + ... + 729888116.

It is an arithmetic number, because the mean of its divisors is an integer number (4611189532716).

Almost surely, 2^{56278699687265} is an apocalyptic number.

56278699687265 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56278699687265 is a deficient number, since it is larger than the sum of its proper divisors (17500332836191).

56278699687265 is a wasteful number, since it uses less digits than its factorization.

56278699687265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459699840.

The product of its digits is 32920473600, while the sum is 86.

The spelling of 56278699687265 in words is "fifty-six trillion, two hundred seventy-eight billion, six hundred ninety-nine million, six hundred eighty-seven thousand, two hundred sixty-five".