69816770354813 has 2 divisors, whose sum is σ = 69816770354814. Its totient is φ = 69816770354812.

The previous prime is 69816770354797. The next prime is 69816770354887. The reversal of 69816770354813 is 31845307761896.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66930757178884 + 2886013175929 = 8181122^2 + 1698827^2 .

It is a cyclic number.

It is not a de Polignac number, because 69816770354813 - 2⁴ = 69816770354797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69816770356813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34908385177406 + 34908385177407.

It is an arithmetic number, because the mean of its divisors is an integer number (34908385177407).

Almost surely, 2^{69816770354813} is an apocalyptic number.

It is an amenable number.

69816770354813 is a deficient number, since it is larger than the sum of its proper divisors (1).

69816770354813 is an equidigital number, since it uses as much as digits as its factorization.

69816770354813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 182891520, while the sum is 68.

The spelling of 69816770354813 in words is "sixty-nine trillion, eight hundred sixteen billion, seven hundred seventy million, three hundred fifty-four thousand, eight hundred thirteen".