161401454592 has 360 divisors, whose sum is σ = 504332887296. Its totient is φ = 44973686784.

The previous prime is 161401454569. The next prime is 161401454603. The reversal of 161401454592 is 295454104161.

161401454592 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 966475693 + ... + 966475859.

Almost surely, 2^161401454592 is an apocalyptic number.

161401454592 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 161401454592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252166443648).

161401454592 is an abundant number, since it is smaller than the sum of its proper divisors (342931432704).

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

161401454592 is an frugal number, since it uses more digits than its factorization.

161401454592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311 (or 232 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 42.

The spelling of 161401454592 in words is "one hundred sixty-one billion, four hundred one million, four hundred fifty-four thousand, five hundred ninety-two".