78112101966233 has 2 divisors, whose sum is σ = 78112101966234. Its totient is φ = 78112101966232.

The previous prime is 78112101966221. The next prime is 78112101966263. The reversal of 78112101966233 is 33266910121187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71497391205769 + 6614710760464 = 8455613^2 + 2571908^2 .

It is a cyclic number.

It is not a de Polignac number, because 78112101966233 - 2³⁰ = 78111028224409 is a prime.

It is a super-2 number, since 2×78112101966233² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78112101966263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39056050983116 + 39056050983117.

It is an arithmetic number, because the mean of its divisors is an integer number (39056050983117).

Almost surely, 2^{78112101966233} is an apocalyptic number.

It is an amenable number.

78112101966233 is a deficient number, since it is larger than the sum of its proper divisors (1).

78112101966233 is an equidigital number, since it uses as much as digits as its factorization.

78112101966233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 78112101966233 in words is "seventy-eight trillion, one hundred twelve billion, one hundred one million, nine hundred sixty-six thousand, two hundred thirty-three".