161130492768 has 144 divisors (see below), whose sum is σ = 491453464320. Its totient is φ = 45281871360.

The previous prime is 161130492767. The next prime is 161130492773. The reversal of 161130492768 is 867294031161.

It is a super-3 number, since 3×161130492768³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161130492763) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2468293 + ... + 2532731.

It is an arithmetic number, because the mean of its divisors is an integer number (3412871280).

Almost surely, 2^161130492768 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 161130492768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245726732160).

161130492768 is an abundant number, since it is smaller than the sum of its proper divisors (330322971552).

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

161130492768 is an equidigital number, since it uses as much as digits as its factorization.

161130492768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64581 (or 64512 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 48.

The spelling of 161130492768 in words is "one hundred sixty-one billion, one hundred thirty million, four hundred ninety-two thousand, seven hundred sixty-eight".