15255528163 has 4 divisors (see below), whose sum is σ = 15375650560. Its totient is φ = 15135405768.

The previous prime is 15255528161. The next prime is 15255528199. The reversal of 15255528163 is 36182555251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 15255528163 - 2¹ = 15255528161 is a prime.

It is a super-2 number, since 2×15255528163² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15255528161) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60061008 + ... + 60061261.

It is an arithmetic number, because the mean of its divisors is an integer number (3843912640).

Almost surely, 2^15255528163 is an apocalyptic number.

15255528163 is a deficient number, since it is larger than the sum of its proper divisors (120122397).

15255528163 is a wasteful number, since it uses less digits than its factorization.

15255528163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120122396.

The product of its digits is 360000, while the sum is 43.

The spelling of 15255528163 in words is "fifteen billion, two hundred fifty-five million, five hundred twenty-eight thousand, one hundred sixty-three".