161764474344 has 256 divisors, whose sum is σ = 457729090560. Its totient is φ = 47215872000.

The previous prime is 161764474327. The next prime is 161764474499. The reversal of 161764474344 is 443474467161.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 488714259 + ... + 488714589.

It is an arithmetic number, because the mean of its divisors is an integer number (1788004260).

Almost surely, 2^161764474344 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 161764474344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228864545280).

161764474344 is an abundant number, since it is smaller than the sum of its proper divisors (295964616216).

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

161764474344 is a wasteful number, since it uses less digits than its factorization.

161764474344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832 (or 828 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 51.

The spelling of 161764474344 in words is "one hundred sixty-one billion, seven hundred sixty-four million, four hundred seventy-four thousand, three hundred forty-four".