161748396582912 has 576 divisors, whose sum is σ = 492747929856000. Its totient is φ = 51047210188800.

The previous prime is 161748396582889. The next prime is 161748396582923. The reversal of 161748396582912 is 219285693847161.

161748396582912 is a `hidden beast` number, since 1 + 6 + 1 + 7 + 4 + 8 + 39 + 6 + 582 + 9 + 1 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (576).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7113247639 + ... + 7113270377.

It is an arithmetic number, because the mean of its divisors is an integer number (855465156000).

Almost surely, 2^{161748396582912} is an apocalyptic number.

161748396582912 is a gapful number since it is divisible by the number (12) 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 161748396582912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246373964928000).

161748396582912 is an abundant number, since it is smaller than the sum of its proper divisors (330999533273088).

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

161748396582912 is a wasteful number, since it uses less digits than its factorization.

161748396582912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23068 (or 23045 counting only the distinct ones).

The product of its digits is 313528320, while the sum is 72.

The spelling of 161748396582912 in words is "one hundred sixty-one trillion, seven hundred forty-eight billion, three hundred ninety-six million, five hundred eighty-two thousand, nine hundred twelve".