8155149017 has 2 divisors, whose sum is σ = 8155149018. Its totient is φ = 8155149016.

The previous prime is 8155148983. The next prime is 8155149053. The reversal of 8155149017 is 7109415518.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7862191561 + 292957456 = 88669^2 + 17116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8155149017 is a prime.

It is not a weakly prime, because it can be changed into another prime (8155149517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4077574508 + 4077574509.

It is an arithmetic number, because the mean of its divisors is an integer number (4077574509).

Almost surely, 2^8155149017 is an apocalyptic number.

It is an amenable number.

8155149017 is a deficient number, since it is larger than the sum of its proper divisors (1).

8155149017 is an equidigital number, since it uses as much as digits as its factorization.

8155149017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50400, while the sum is 41.

The square root of 8155149017 is about 90305.8636911247. The cubic root of 8155149017 is about 2012.8463931714.

The spelling of 8155149017 in words is "eight billion, one hundred fifty-five million, one hundred forty-nine thousand, seventeen".