8161165235752 has 64 divisors (see below), whose sum is σ = 16670271096000. Its totient is φ = 3730881563136.

The previous prime is 8161165235711. The next prime is 8161165235753. The reversal of 8161165235752 is 2575325611618.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 8161165235752.

It is not an unprimeable number, because it can be changed into a prime (8161165235753) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9722163 + ... + 10528189.

It is an arithmetic number, because the mean of its divisors is an integer number (260472985875).

Almost surely, 2^{8161165235752} is an apocalyptic number.

It is an amenable number.

8161165235752 is an abundant number, since it is smaller than the sum of its proper divisors (8509105860248).

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

8161165235752 is a wasteful number, since it uses less digits than its factorization.

8161165235752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 808378 (or 808374 counting only the distinct ones).

The product of its digits is 3024000, while the sum is 52.

The spelling of 8161165235752 in words is "eight trillion, one hundred sixty-one billion, one hundred sixty-five million, two hundred thirty-five thousand, seven hundred fifty-two".