161366335152 has 160 divisors (see below), whose sum is σ = 490371114240. Its totient is φ = 45195264000.

The previous prime is 161366335139. The next prime is 161366335153. The reversal of 161366335152 is 251533663161.

It is a happy number.

161366335152 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (161366335153) 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 31 ways as a sum of consecutive naturals, for example, 215152 + ... + 607472.

It is an arithmetic number, because the mean of its divisors is an integer number (3064819464).

Almost surely, 2^161366335152 is an apocalyptic number.

161366335152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 161366335152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (245185557120).

161366335152 is an abundant number, since it is smaller than the sum of its proper divisors (329004779088).

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

161366335152 is a wasteful number, since it uses less digits than its factorization.

161366335152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392403 (or 392397 counting only the distinct ones).

The product of its digits is 291600, while the sum is 42.

The spelling of 161366335152 in words is "one hundred sixty-one billion, three hundred sixty-six million, three hundred thirty-five thousand, one hundred fifty-two".