75664633161 has 32 divisors (see below), whose sum is σ = 110350356480. Its totient is φ = 45833730624.

The previous prime is 75664633103. The next prime is 75664633171. The reversal of 75664633161 is 16133646657.

It is not a de Polignac number, because 75664633161 - 2¹⁴ = 75664616777 is a prime.

It is a super-4 number, since 4×75664633161⁴ (a number of 45 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 75664633161.

It is not an unprimeable number, because it can be changed into a prime (75664633171) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3750046 + ... + 3770168.

It is an arithmetic number, because the mean of its divisors is an integer number (3448448640).

Almost surely, 2^75664633161 is an apocalyptic number.

It is an amenable number.

75664633161 is a deficient number, since it is larger than the sum of its proper divisors (34685723319).

75664633161 is a wasteful number, since it uses less digits than its factorization.

75664633161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21645.

The product of its digits is 1632960, while the sum is 48.

The spelling of 75664633161 in words is "seventy-five billion, six hundred sixty-four million, six hundred thirty-three thousand, one hundred sixty-one".