78242367778303 has 2 divisors, whose sum is σ = 78242367778304. Its totient is φ = 78242367778302.

The previous prime is 78242367778241. The next prime is 78242367778339. The reversal of 78242367778303 is 30387776324287.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78242367778303 is a prime.

It is a super-2 number, since 2×78242367778303² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78242367778343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39121183889151 + 39121183889152.

It is an arithmetic number, because the mean of its divisors is an integer number (39121183889152).

Almost surely, 2^{78242367778303} is an apocalyptic number.

78242367778303 is a deficient number, since it is larger than the sum of its proper divisors (1).

78242367778303 is an equidigital number, since it uses as much as digits as its factorization.

78242367778303 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 398297088, while the sum is 67.

The spelling of 78242367778303 in words is "seventy-eight trillion, two hundred forty-two billion, three hundred sixty-seven million, seven hundred seventy-eight thousand, three hundred three".