12340578729097 has 2 divisors, whose sum is σ = 12340578729098. Its totient is φ = 12340578729096.

The previous prime is 12340578729091. The next prime is 12340578729133. The reversal of 12340578729097 is 79092787504321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11829616815241 + 510961913856 = 3439421^2 + 714816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340578729097 is a prime.

It is not a weakly prime, because it can be changed into another prime (12340578729091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170289364548 + 6170289364549.

It is an arithmetic number, because the mean of its divisors is an integer number (6170289364549).

Almost surely, 2^{12340578729097} is an apocalyptic number.

It is an amenable number.

12340578729097 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340578729097 is an equidigital number, since it uses as much as digits as its factorization.

12340578729097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53343360, while the sum is 64.

The spelling of 12340578729097 in words is "twelve trillion, three hundred forty billion, five hundred seventy-eight million, seven hundred twenty-nine thousand, ninety-seven".