8145538655 has 8 divisors (see below), whose sum is σ = 9777067200. Its totient is φ = 6514817056.

The previous prime is 8145538631. The next prime is 8145538657. The reversal of 8145538655 is 5568355418.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8145538655 - 2²⁴ = 8128761439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8145538657) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179300 + ... + 220089.

It is an arithmetic number, because the mean of its divisors is an integer number (1222133400).

Almost surely, 2^8145538655 is an apocalyptic number.

8145538655 is a deficient number, since it is larger than the sum of its proper divisors (1631528545).

8145538655 is a wasteful number, since it uses less digits than its factorization.

8145538655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403473.

The product of its digits is 2880000, while the sum is 50.

The square root of 8145538655 is about 90252.6379392868. The cubic root of 8145538655 is about 2012.0554088053.

The spelling of 8145538655 in words is "eight billion, one hundred forty-five million, five hundred thirty-eight thousand, six hundred fifty-five".