161366140530 has 48 divisors (see below), whose sum is σ = 479487962304. Its totient is φ = 36883689120.

The previous prime is 161366140511. The next prime is 161366140531. The reversal of 161366140530 is 35041663161.

161366140530 is a `hidden beast` number, since 1 + 6 + 1 + 3 + 6 + 614 + 0 + 5 + 30 = 666.

161366140530 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (161366140531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 128067736 + ... + 128068995.

It is an arithmetic number, because the mean of its divisors is an integer number (9989332548).

Almost surely, 2^161366140530 is an apocalyptic number.

161366140530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

161366140530 is an abundant number, since it is smaller than the sum of its proper divisors (318121821774).

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

161366140530 is a wasteful number, since it uses less digits than its factorization.

161366140530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 256136751 (or 256136748 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The spelling of 161366140530 in words is "one hundred sixty-one billion, three hundred sixty-six million, one hundred forty thousand, five hundred thirty".