78107553241 has 2 divisors, whose sum is σ = 78107553242. Its totient is φ = 78107553240.

The previous prime is 78107553233. The next prime is 78107553289. The reversal of 78107553241 is 14235570187.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74313486025 + 3794067216 = 272605^2 + 61596^2 .

It is an emirp because it is prime and its reverse (14235570187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78107553241 - 2³ = 78107553233 is a prime.

It is a super-2 number, since 2×78107553241² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78107533241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39053776620 + 39053776621.

It is an arithmetic number, because the mean of its divisors is an integer number (39053776621).

Almost surely, 2^78107553241 is an apocalyptic number.

It is an amenable number.

78107553241 is a deficient number, since it is larger than the sum of its proper divisors (1).

78107553241 is an equidigital number, since it uses as much as digits as its factorization.

78107553241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 78107553241 in words is "seventy-eight billion, one hundred seven million, five hundred fifty-three thousand, two hundred forty-one".