8638107148511 has 2 divisors, whose sum is σ = 8638107148512. Its totient is φ = 8638107148510.

The previous prime is 8638107148439. The next prime is 8638107148597. The reversal of 8638107148511 is 1158417018368.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8638107148511 - 2²² = 8638102954207 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8638107148711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4319053574255 + 4319053574256.

It is an arithmetic number, because the mean of its divisors is an integer number (4319053574256).

Almost surely, 2^{8638107148511} is an apocalyptic number.

8638107148511 is a deficient number, since it is larger than the sum of its proper divisors (1).

8638107148511 is an equidigital number, since it uses as much as digits as its factorization.

8638107148511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1290240, while the sum is 53.

The spelling of 8638107148511 in words is "eight trillion, six hundred thirty-eight billion, one hundred seven million, one hundred forty-eight thousand, five hundred eleven".