161349628000 has 144 divisors (see below), whose sum is σ = 435753313632. Its totient is φ = 58672416000.

The previous prime is 161349627983. The next prime is 161349628003. The reversal of 161349628000 is 826943161.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161349628003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 317317 + ... + 650683.

It is an arithmetic number, because the mean of its divisors is an integer number (3026064678).

Almost surely, 2^161349628000 is an apocalyptic number.

161349628000 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 161349628000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217876656816).

161349628000 is an abundant number, since it is smaller than the sum of its proper divisors (274403685632).

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

161349628000 is a wasteful number, since it uses less digits than its factorization.

161349628000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333414 (or 333385 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 40.

The spelling of 161349628000 in words is "one hundred sixty-one billion, three hundred forty-nine million, six hundred twenty-eight thousand".