68686554631159 has 8 divisors (see below), whose sum is σ = 69113064293280. Its totient is φ = 68261279440896.

The previous prime is 68686554631153. The next prime is 68686554631183. The reversal of 68686554631159 is 95113645568686.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 68686554631159 - 2⁷ = 68686554631031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68686554631091 and 68686554631100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68686554631153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308506339 + ... + 308728900.

It is an arithmetic number, because the mean of its divisors is an integer number (8639133036660).

Almost surely, 2^{68686554631159} is an apocalyptic number.

68686554631159 is a deficient number, since it is larger than the sum of its proper divisors (426509662121).

68686554631159 is a wasteful number, since it uses less digits than its factorization.

68686554631159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617235929.

The product of its digits is 1119744000, while the sum is 73.

The spelling of 68686554631159 in words is "sixty-eight trillion, six hundred eighty-six billion, five hundred fifty-four million, six hundred thirty-one thousand, one hundred fifty-nine".