163961703360 has 2688 divisors, whose sum is σ = 805210398720. Its totient is φ = 30767579136.

The previous prime is 163961703341. The next prime is 163961703361. The reversal of 163961703360 is 63307169361.

163961703360 is a `hidden beast` number, since 1 + 6 + 396 + 170 + 33 + 60 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163961703361) by changing a digit.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 3488546857 + ... + 3488546903.

It is an arithmetic number, because the mean of its divisors is an integer number (299557440).

Almost surely, 2^163961703360 is an apocalyptic number.

163961703360 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 163961703360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402605199360).

163961703360 is an abundant number, since it is smaller than the sum of its proper divisors (641248695360).

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

163961703360 is a wasteful number, since it uses less digits than its factorization.

163961703360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 367416, while the sum is 45.

The spelling of 163961703360 in words is "one hundred sixty-three billion, nine hundred sixty-one million, seven hundred three thousand, three hundred sixty".