161130526428 has 12 divisors (see below), whose sum is σ = 375971228360. Its totient is φ = 53710175472.

The previous prime is 161130526411. The next prime is 161130526433. The reversal of 161130526428 is 824625031161.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6713771923 + ... + 6713771946.

Almost surely, 2^161130526428 is an apocalyptic number.

It is an amenable number.

161130526428 is an abundant number, since it is smaller than the sum of its proper divisors (214840701932).

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

161130526428 is a wasteful number, since it uses less digits than its factorization.

161130526428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13427543876 (or 13427543874 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 161130526428 its reverse (824625031161), we get a palindrome (985755557589).

The spelling of 161130526428 in words is "one hundred sixty-one billion, one hundred thirty million, five hundred twenty-six thousand, four hundred twenty-eight".