68036779463 has 4 divisors (see below), whose sum is σ = 68046757968.
Its totient is φ = 68026800960.
The previous prime is 68036779457. The next prime is 68036779519. The reversal of 68036779463 is 36497763086.
It is a semiprime because it is the product of two primes.
It is a cyclic number.
It is not a de Polignac number, because 68036779463 - 26 = 68036779399 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68036779423) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4979018 + ... + 4992663.
It is an arithmetic number, because the mean of its divisors is an integer number (17011689492).
Almost surely, 268036779463 is an apocalyptic number.
68036779463 is a deficient number, since it is larger than the sum of its proper divisors (9978505).
68036779463 is an equidigital number, since it uses as much as digits as its factorization.
68036779463 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9978504.
The product of its (nonzero) digits is 27433728, while the sum is 59.
The spelling of 68036779463 in words is "sixty-eight billion, thirty-six million, seven hundred seventy-nine thousand, four hundred sixty-three".