161744098541 has 8 divisors (see below), whose sum is σ = 166940535840. Its totient is φ = 156629495088.

The previous prime is 161744098499. The next prime is 161744098573. The reversal of 161744098541 is 145890447161.

161744098541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-161744098541 is a prime.

It is a super-2 number, since 2×161744098541² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 161744098541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161744098441) 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 7 ways as a sum of consecutive naturals, for example, 20454446 + ... + 20462351.

It is an arithmetic number, because the mean of its divisors is an integer number (20867566980).

Almost surely, 2^161744098541 is an apocalyptic number.

It is an amenable number.

161744098541 is a deficient number, since it is larger than the sum of its proper divisors (5196437299).

161744098541 is an equidigital number, since it uses as much as digits as its factorization.

161744098541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40916923.

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 161744098541 in words is "one hundred sixty-one billion, seven hundred forty-four million, ninety-eight thousand, five hundred forty-one".