161103741344 has 144 divisors (see below), whose sum is σ = 400526683200. Its totient is φ = 63732614400.

The previous prime is 161103741277. The next prime is 161103741347. The reversal of 161103741344 is 443147301161.

It is not an unprimeable number, because it can be changed into a prime (161103741347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1811519 + ... + 1898369.

It is an arithmetic number, because the mean of its divisors is an integer number (2781435300).

Almost surely, 2^161103741344 is an apocalyptic number.

161103741344 is a gapful number since it is divisible by the number (14) 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 161103741344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200263341600).

161103741344 is an abundant number, since it is smaller than the sum of its proper divisors (239422941856).

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

161103741344 is an equidigital number, since it uses as much as digits as its factorization.

161103741344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86908 (or 86873 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The spelling of 161103741344 in words is "one hundred sixty-one billion, one hundred three million, seven hundred forty-one thousand, three hundred forty-four".