163172770560 has 864 divisors, whose sum is σ = 612433156608. Its totient is φ = 40025456640.

The previous prime is 163172770559. The next prime is 163172770637. The reversal of 163172770560 is 65077271361.

163172770560 is a `hidden beast` number, since 1 + 6 + 3 + 17 + 2 + 7 + 70 + 560 = 666.

163172770560 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 (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 700312204 + ... + 700312436.

It is an arithmetic number, because the mean of its divisors is an integer number (708834672).

Almost surely, 2^163172770560 is an apocalyptic number.

163172770560 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 163172770560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (306216578304).

163172770560 is an abundant number, since it is smaller than the sum of its proper divisors (449260386048).

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

163172770560 is a wasteful number, since it uses less digits than its factorization.

163172770560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 381 (or 364 counting only the distinct ones).

The product of its (nonzero) digits is 370440, while the sum is 45.

The spelling of 163172770560 in words is "one hundred sixty-three billion, one hundred seventy-two million, seven hundred seventy thousand, five hundred sixty".