169442485440 has 224 divisors, whose sum is σ = 547851811584. Its totient is φ = 44360110080.

The previous prime is 169442485403. The next prime is 169442485451. The reversal of 169442485440 is 44584244961.

It is a happy number.

It is a super-2 number, since 2×169442485440² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19741950 + ... + 19750530.

It is an arithmetic number, because the mean of its divisors is an integer number (2445767016).

Almost surely, 2^169442485440 is an apocalyptic number.

169442485440 is a gapful number since it is divisible by the number (10) 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 169442485440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273925905792).

169442485440 is an abundant number, since it is smaller than the sum of its proper divisors (378409326144).

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

169442485440 is a wasteful number, since it uses less digits than its factorization.

169442485440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8975 (or 8965 counting only the distinct ones).

The product of its (nonzero) digits is 4423680, while the sum is 51.

The spelling of 169442485440 in words is "one hundred sixty-nine billion, four hundred forty-two million, four hundred eighty-five thousand, four hundred forty".