8135873145 has 128 divisors (see below), whose sum is σ = 15552000000. Its totient is φ = 4026198528.

The previous prime is 8135873143. The next prime is 8135873147. The reversal of 8135873145 is 5413785318.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8135873143) and next prime (8135873147).

It is not a de Polignac number, because 8135873145 - 2¹ = 8135873143 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 8135873145.

It is not an unprimeable number, because it can be changed into a prime (8135873143) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16304106 + ... + 16304604.

It is an arithmetic number, because the mean of its divisors is an integer number (121500000).

Almost surely, 2^8135873145 is an apocalyptic number.

It is an amenable number.

8135873145 is a deficient number, since it is larger than the sum of its proper divisors (7416126855).

8135873145 is a wasteful number, since it uses less digits than its factorization.

8135873145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684 (or 678 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 8135873145 is about 90199.0750784064. The cubic root of 8135873145 is about 2011.2592576959.

The spelling of 8135873145 in words is "eight billion, one hundred thirty-five million, eight hundred seventy-three thousand, one hundred forty-five".