161345063140 has 12 divisors (see below), whose sum is σ = 338824632636. Its totient is φ = 64538025248.

The previous prime is 161345063137. The next prime is 161345063141. The reversal of 161345063140 is 41360543161.

161345063140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 75500751076 + 85844312064 = 274774^2 + 292992^2 .

It is a junction number, because it is equal to n+sod(n) for n = 161345063096 and 161345063105.

It is not an unprimeable number, because it can be changed into a prime (161345063141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4033626559 + ... + 4033626598.

It is an arithmetic number, because the mean of its divisors is an integer number (28235386053).

Almost surely, 2^161345063140 is an apocalyptic number.

161345063140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161345063140 is an abundant number, since it is smaller than the sum of its proper divisors (177479569496).

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

161345063140 is a wasteful number, since it uses less digits than its factorization.

161345063140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8067253166 (or 8067253164 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 161345063140 in words is "one hundred sixty-one billion, three hundred forty-five million, sixty-three thousand, one hundred forty".