78787641341 has 2 divisors, whose sum is σ = 78787641342. Its totient is φ = 78787641340.

The previous prime is 78787641323. The next prime is 78787641343. The reversal of 78787641341 is 14314678787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62805372100 + 15982269241 = 250610^2 + 126421^2 .

It is a cyclic number.

It is not a de Polignac number, because 78787641341 - 2⁶ = 78787641277 is a prime.

Together with 78787641343, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (78787641343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39393820670 + 39393820671.

It is an arithmetic number, because the mean of its divisors is an integer number (39393820671).

Almost surely, 2^78787641341 is an apocalyptic number.

It is an amenable number.

78787641341 is a deficient number, since it is larger than the sum of its proper divisors (1).

78787641341 is an equidigital number, since it uses as much as digits as its factorization.

78787641341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6322176, while the sum is 56.

The spelling of 78787641341 in words is "seventy-eight billion, seven hundred eighty-seven million, six hundred forty-one thousand, three hundred forty-one".