161052452400 has 720 divisors, whose sum is σ = 620017887744. Its totient is φ = 34997760000.

The previous prime is 161052452399. The next prime is 161052452459. The reversal of 161052452400 is 4254250161.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 573140260 + ... + 573140540.

Almost surely, 2^161052452400 is an apocalyptic number.

161052452400 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 161052452400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310008943872).

161052452400 is an abundant number, since it is smaller than the sum of its proper divisors (458965435344).

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

161052452400 is a wasteful number, since it uses less digits than its factorization.

161052452400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The spelling of 161052452400 in words is "one hundred sixty-one billion, fifty-two million, four hundred fifty-two thousand, four hundred".