68910783542197 has 4 divisors (see below), whose sum is σ = 68911537803660. Its totient is φ = 68910029280736.

The previous prime is 68910783542123. The next prime is 68910783542203. The reversal of 68910783542197 is 79124538701986.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67802477819076 + 1108305723121 = 8234226^2 + 1052761^2 .

It is a cyclic number.

It is not a de Polignac number, because 68910783542197 - 2¹¹ = 68910783540149 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 (68910783342197) 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, 376993672 + ... + 377176417.

It is an arithmetic number, because the mean of its divisors is an integer number (17227884450915).

It is a 2-persistent number, because it is pandigital, and so is 2⋅68910783542197 = 137821567084394, but 3⋅68910783542197 = 206732350626591 is not.

Almost surely, 2^{68910783542197} is an apocalyptic number.

It is an amenable number.

68910783542197 is a deficient number, since it is larger than the sum of its proper divisors (754261463).

68910783542197 is an equidigital number, since it uses as much as digits as its factorization.

68910783542197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754261462.

The product of its (nonzero) digits is 182891520, while the sum is 70.

The spelling of 68910783542197 in words is "sixty-eight trillion, nine hundred ten billion, seven hundred eighty-three million, five hundred forty-two thousand, one hundred ninety-seven".