68201577953 has 2 divisors, whose sum is σ = 68201577954. Its totient is φ = 68201577952.

The previous prime is 68201577881. The next prime is 68201577971. The reversal of 68201577953 is 35977510286.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55435289809 + 12766288144 = 235447^2 + 112988^2 .

It is a cyclic number.

It is not a de Polignac number, because 68201577953 - 2¹⁴ = 68201561569 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 68201577895 and 68201577904.

It is not a weakly prime, because it can be changed into another prime (68207577953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34100788976 + 34100788977.

It is an arithmetic number, because the mean of its divisors is an integer number (34100788977).

Almost surely, 2^68201577953 is an apocalyptic number.

It is an amenable number.

68201577953 is a deficient number, since it is larger than the sum of its proper divisors (1).

68201577953 is an equidigital number, since it uses as much as digits as its factorization.

68201577953 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 53.

The spelling of 68201577953 in words is "sixty-eight billion, two hundred one million, five hundred seventy-seven thousand, nine hundred fifty-three".