77368249201 has 2 divisors, whose sum is σ = 77368249202. Its totient is φ = 77368249200.

The previous prime is 77368249171. The next prime is 77368249207. The reversal of 77368249201 is 10294286377.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77367978801 + 270400 = 278151^2 + 520^2 .

It is an emirp because it is prime and its reverse (10294286377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77368249201 - 2²³ = 77359860593 is a prime.

It is not a weakly prime, because it can be changed into another prime (77368249207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38684124600 + 38684124601.

It is an arithmetic number, because the mean of its divisors is an integer number (38684124601).

Almost surely, 2^77368249201 is an apocalyptic number.

It is an amenable number.

77368249201 is a deficient number, since it is larger than the sum of its proper divisors (1).

77368249201 is an equidigital number, since it uses as much as digits as its factorization.

77368249201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1016064, while the sum is 49.

The spelling of 77368249201 in words is "seventy-seven billion, three hundred sixty-eight million, two hundred forty-nine thousand, two hundred one".