56678211287665 has 32 divisors (see below), whose sum is σ = 76756641984000. Its totient is φ = 39798500017920.

The previous prime is 56678211287657. The next prime is 56678211287681.

56678211287665 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 56678211287665 - 2³ = 56678211287657 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56678211287594 and 56678211287603.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117938536 + ... + 118418134.

It is an arithmetic number, because the mean of its divisors is an integer number (2398645062000).

Almost surely, 2^{56678211287665} is an apocalyptic number.

56678211287665 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

56678211287665 is a deficient number, since it is larger than the sum of its proper divisors (20078430696335).

56678211287665 is a wasteful number, since it uses less digits than its factorization.

56678211287665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 553737.

The product of its digits is 406425600, while the sum is 70.

The spelling of 56678211287665 in words is "fifty-six trillion, six hundred seventy-eight billion, two hundred eleven million, two hundred eighty-seven thousand, six hundred sixty-five".