78363553201 has 2 divisors, whose sum is σ = 78363553202. Its totient is φ = 78363553200.

The previous prime is 78363553097. The next prime is 78363553217. The reversal of 78363553201 is 10235536387.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65864089600 + 12499463601 = 256640^2 + 111801^2 .

It is an emirp because it is prime and its reverse (10235536387) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 78363553201 - 2¹⁷ = 78363422129 is a prime.

It is a super-2 number, since 2×78363553201² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (78363553231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39181776600 + 39181776601.

It is an arithmetic number, because the mean of its divisors is an integer number (39181776601).

Almost surely, 2^78363553201 is an apocalyptic number.

It is an amenable number.

78363553201 is a deficient number, since it is larger than the sum of its proper divisors (1).

78363553201 is an equidigital number, since it uses as much as digits as its factorization.

78363553201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 78363553201 in words is "seventy-eight billion, three hundred sixty-three million, five hundred fifty-three thousand, two hundred one".