68205463791 has 8 divisors (see below), whose sum is σ = 90941849520. Its totient is φ = 45469693632.

The previous prime is 68205463757. The next prime is 68205463841. The reversal of 68205463791 is 19736450286.

68205463791 is a nontrivial binomial coefficient, being equal to C(369339, 2).

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

It is not a de Polignac number, because 68205463791 - 2¹¹ = 68205461743 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68205413791) 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, 277005 + ... + 461673.

It is an arithmetic number, because the mean of its divisors is an integer number (11367731190).

It is a 2-persistent number, because it is pandigital, and so is 2⋅68205463791 = 136410927582, but 3⋅68205463791 = 204616391373 is not.

Almost surely, 2^68205463791 is an apocalyptic number.

68205463791 is the 369338-th triangular number.

68205463791 is a deficient number, since it is larger than the sum of its proper divisors (22736385729).

68205463791 is a wasteful number, since it uses less digits than its factorization.

68205463791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307785.

The product of its (nonzero) digits is 2177280, while the sum is 51.

It can be divided in two parts, 68205 and 463791, that added together give a triangular number (531996 = T₁₀₃₁).

The spelling of 68205463791 in words is "sixty-eight billion, two hundred five million, four hundred sixty-three thousand, seven hundred ninety-one".