161244846720 has 768 divisors, whose sum is σ = 613102089600. Its totient is φ = 40382447616.

The previous prime is 161244846713. The next prime is 161244846727. The reversal of 161244846720 is 27648442161.

161244846720 is a `hidden beast` number, since 1 + 6 + 124 + 48 + 467 + 20 = 666.

It is an interprime number because it is at equal distance from previous prime (161244846713) and next prime (161244846727).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (161244846727) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 582111222 + ... + 582111498.

Almost surely, 2^161244846720 is an apocalyptic number.

161244846720 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 161244846720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306551044800).

161244846720 is an abundant number, since it is smaller than the sum of its proper divisors (451857242880).

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

161244846720 is a wasteful number, since it uses less digits than its factorization.

161244846720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 503 counting only the distinct ones).

The product of its (nonzero) digits is 516096, while the sum is 45.

The spelling of 161244846720 in words is "one hundred sixty-one billion, two hundred forty-four million, eight hundred forty-six thousand, seven hundred twenty".