161037325800 has 576 divisors, whose sum is σ = 608570424000. Its totient is φ = 38908961280.

The previous prime is 161037325789. The next prime is 161037325811. The reversal of 161037325800 is 8523730161.

161037325800 is a `hidden beast` number, since 1 + 6 + 1 + 0 + 3 + 73 + 2 + 580 + 0 = 666.

161037325800 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (161037325789) and next prime (161037325811).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 244365871 + ... + 244366529.

It is an arithmetic number, because the mean of its divisors is an integer number (1056545875).

Almost surely, 2^161037325800 is an apocalyptic number.

161037325800 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 161037325800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (304285212000).

161037325800 is an abundant number, since it is smaller than the sum of its proper divisors (447533098200).

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

161037325800 is a wasteful number, since it uses less digits than its factorization.

161037325800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815 (or 741 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The spelling of 161037325800 in words is "one hundred sixty-one billion, thirty-seven million, three hundred twenty-five thousand, eight hundred".