78203781041233 has 2 divisors, whose sum is σ = 78203781041234. Its totient is φ = 78203781041232.

The previous prime is 78203781041219. The next prime is 78203781041291. The reversal of 78203781041233 is 33214018730287.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59965013589264 + 18238767451969 = 7743708^2 + 4270687^2 .

It is an emirp because it is prime and its reverse (33214018730287) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78203781041233 - 2¹³ = 78203781033041 is a prime.

It is a super-2 number, since 2×78203781041233² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78203781041033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39101890520616 + 39101890520617.

It is an arithmetic number, because the mean of its divisors is an integer number (39101890520617).

Almost surely, 2^{78203781041233} is an apocalyptic number.

It is an amenable number.

78203781041233 is a deficient number, since it is larger than the sum of its proper divisors (1).

78203781041233 is an equidigital number, since it uses as much as digits as its factorization.

78203781041233 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1354752, while the sum is 49.

The spelling of 78203781041233 in words is "seventy-eight trillion, two hundred three billion, seven hundred eighty-one million, forty-one thousand, two hundred thirty-three".