67381493759953 has 2 divisors, whose sum is σ = 67381493759954. Its totient is φ = 67381493759952.

The previous prime is 67381493759939. The next prime is 67381493760047. The reversal of 67381493759953 is 35995739418376.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55536656053264 + 11844837706689 = 7452292^2 + 3441633^2 .

It is a cyclic number.

It is not a de Polignac number, because 67381493759953 - 2⁹ = 67381493759441 is a prime.

It is not a weakly prime, because it can be changed into another prime (67381493759933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33690746879976 + 33690746879977.

It is an arithmetic number, because the mean of its divisors is an integer number (33690746879977).

Almost surely, 2^{67381493759953} is an apocalyptic number.

It is an amenable number.

67381493759953 is a deficient number, since it is larger than the sum of its proper divisors (1).

67381493759953 is an equidigital number, since it uses as much as digits as its factorization.

67381493759953 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4629441600, while the sum is 79.

The spelling of 67381493759953 in words is "sixty-seven trillion, three hundred eighty-one billion, four hundred ninety-three million, seven hundred fifty-nine thousand, nine hundred fifty-three".