161240387097600 has 3168 divisors, whose sum is σ = 658761026774400. Its totient is φ = 38507249664000.

The previous prime is 161240387097533. The next prime is 161240387097637. The reversal of 161240387097600 is 6790783042161.

161240387097600 is a `hidden beast` number, since 1 + 6 + 1 + 24 + 0 + 3 + 8 + 7 + 0 + 9 + 7 + 600 = 666.

161240387097600 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 1230842649535 + ... + 1230842649665.

It is an arithmetic number, because the mean of its divisors is an integer number (207942243300).

Almost surely, 2^{161240387097600} is an apocalyptic number.

161240387097600 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 161240387097600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329380513387200).

161240387097600 is an abundant number, since it is smaller than the sum of its proper divisors (497520639676800).

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

161240387097600 is a wasteful number, since it uses less digits than its factorization.

161240387097600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358 (or 298 counting only the distinct ones).

The product of its (nonzero) digits is 3048192, while the sum is 54.

The spelling of 161240387097600 in words is "one hundred sixty-one trillion, two hundred forty billion, three hundred eighty-seven million, ninety-seven thousand, six hundred".