68556216265 has 16 divisors (see below), whose sum is σ = 85869072000. Its totient is φ = 52445274112.

The previous prime is 68556216263. The next prime is 68556216269. The reversal of 68556216265 is 56261265586.

It is a cyclic number.

It is not a de Polignac number, because 68556216265 - 2¹ = 68556216263 is a prime.

It is a super-3 number, since 3×68556216265³ (a number of 33 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (68556216263) 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, 322761 + ... + 491209.

It is an arithmetic number, because the mean of its divisors is an integer number (5366817000).

Almost surely, 2^68556216265 is an apocalyptic number.

It is an amenable number.

68556216265 is a deficient number, since it is larger than the sum of its proper divisors (17312855735).

68556216265 is a wasteful number, since it uses less digits than its factorization.

68556216265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172016.

The product of its digits is 5184000, while the sum is 52.

The spelling of 68556216265 in words is "sixty-eight billion, five hundred fifty-six million, two hundred sixteen thousand, two hundred sixty-five".