8120685751093 has 2 divisors, whose sum is σ = 8120685751094. Its totient is φ = 8120685751092.

The previous prime is 8120685751051. The next prime is 8120685751177. The reversal of 8120685751093 is 3901575860218.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8060926037329 + 59759713764 = 2839177^2 + 244458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8120685751093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8120685751393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4060342875546 + 4060342875547.

It is an arithmetic number, because the mean of its divisors is an integer number (4060342875547).

Almost surely, 2^{8120685751093} is an apocalyptic number.

It is an amenable number.

8120685751093 is a deficient number, since it is larger than the sum of its proper divisors (1).

8120685751093 is an equidigital number, since it uses as much as digits as its factorization.

8120685751093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 55.

The spelling of 8120685751093 in words is "eight trillion, one hundred twenty billion, six hundred eighty-five million, seven hundred fifty-one thousand, ninety-three".