68476357487 has 2 divisors, whose sum is σ = 68476357488. Its totient is φ = 68476357486.

The previous prime is 68476357483. The next prime is 68476357489. The reversal of 68476357487 is 78475367486.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68476357487 - 2² = 68476357483 is a prime.

It is a super-3 number, since 3×68476357487³ (a number of 33 digits) contains 333 as substring.

Together with 68476357489, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68476357483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34238178743 + 34238178744.

It is an arithmetic number, because the mean of its divisors is an integer number (34238178744).

Almost surely, 2^68476357487 is an apocalyptic number.

68476357487 is a deficient number, since it is larger than the sum of its proper divisors (1).

68476357487 is an equidigital number, since it uses as much as digits as its factorization.

68476357487 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 189665280, while the sum is 65.

Subtracting 68476357487 from its reverse (78475367486), we obtain a palindrome (9999009999).

The spelling of 68476357487 in words is "sixty-eight billion, four hundred seventy-six million, three hundred fifty-seven thousand, four hundred eighty-seven".