75180163156 has 54 divisors (see below), whose sum is σ = 156869876814. Its totient is φ = 31434076800.

The previous prime is 75180163153. The next prime is 75180163169. The reversal of 75180163156 is 65136108157.

It can be written as a sum of positive squares in 3 ways, for example, as 7056 + 75180156100 = 84^2 + 274190^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75180163153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 215386 + ... + 443566.

Almost surely, 2^75180163156 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75180163156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78434938407).

75180163156 is an abundant number, since it is smaller than the sum of its proper divisors (81689713658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75180163156 is a wasteful number, since it uses less digits than its factorization.

75180163156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228281 (or 228231 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 75180163156 in words is "seventy-five billion, one hundred eighty million, one hundred sixty-three thousand, one hundred fifty-six".