78245206641233 has 2 divisors, whose sum is σ = 78245206641234. Its totient is φ = 78245206641232.

The previous prime is 78245206641221. The next prime is 78245206641293. The reversal of 78245206641233 is 33214660254287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59305755246529 + 18939451394704 = 7701023^2 + 4351948^2 .

It is a cyclic number.

It is not a de Polignac number, because 78245206641233 - 2²⁶ = 78245139532369 is a prime.

It is a super-2 number, since 2×78245206641233² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78245206641293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39122603320616 + 39122603320617.

It is an arithmetic number, because the mean of its divisors is an integer number (39122603320617).

Almost surely, 2^{78245206641233} is an apocalyptic number.

It is an amenable number.

78245206641233 is a deficient number, since it is larger than the sum of its proper divisors (1).

78245206641233 is an equidigital number, since it uses as much as digits as its factorization.

78245206641233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11612160, while the sum is 53.

The spelling of 78245206641233 in words is "seventy-eight trillion, two hundred forty-five billion, two hundred six million, six hundred forty-one thousand, two hundred thirty-three".