169399122048 has 192 divisors, whose sum is σ = 541896526080. Its totient is φ = 50441287680.

The previous prime is 169399122047. The next prime is 169399122059. The reversal of 169399122048 is 840221993961.

It is a tau number, because it is divible by the number of its divisors (192).

It is a junction number, because it is equal to n+sod(n) for n = 169399121985 and 169399122003.

It is not an unprimeable number, because it can be changed into a prime (169399122047) 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, 281815 + ... + 646697.

It is an arithmetic number, because the mean of its divisors is an integer number (2822377740).

Almost surely, 2^169399122048 is an apocalyptic number.

169399122048 is a gapful number since it is divisible by the number (18) 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 169399122048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270948263040).

169399122048 is an abundant number, since it is smaller than the sum of its proper divisors (372497404032).

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

169399122048 is a wasteful number, since it uses less digits than its factorization.

169399122048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364947 (or 364932 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 169399122048 in words is "one hundred sixty-nine billion, three hundred ninety-nine million, one hundred twenty-two thousand, forty-eight".