68655658715 has 16 divisors (see below), whose sum is σ = 94843611072. Its totient is φ = 46734526464.

The previous prime is 68655658681. The next prime is 68655658723. The reversal of 68655658715 is 51785655686.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 68655658715 - 2¹⁰ = 68655657691 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7154294 + ... + 7163883.

It is an arithmetic number, because the mean of its divisors is an integer number (5927725692).

Almost surely, 2^68655658715 is an apocalyptic number.

68655658715 is a deficient number, since it is larger than the sum of its proper divisors (26187952357).

68655658715 is a wasteful number, since it uses less digits than its factorization.

68655658715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14318326.

The product of its digits is 60480000, while the sum is 62.

The spelling of 68655658715 in words is "sixty-eight billion, six hundred fifty-five million, six hundred fifty-eight thousand, seven hundred fifteen".