163516642387220 has 24 divisors (see below), whose sum is σ = 343387826754504. Its totient is φ = 65406108813696.

The previous prime is 163516642387213. The next prime is 163516642387237. The reversal of 163516642387220 is 22783246615361.

163516642387220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15866487692176 + 147650154695044 = 3983276^2 + 12151138^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31808399 + ... + 36589718.

It is an arithmetic number, because the mean of its divisors is an integer number (14307826114771).

Almost surely, 2^{163516642387220} is an apocalyptic number.

163516642387220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163516642387220 is an abundant number, since it is smaller than the sum of its proper divisors (179871184367284).

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

163516642387220 is a wasteful number, since it uses less digits than its factorization.

163516642387220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68517659 (or 68517657 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 163516642387220 in words is "one hundred sixty-three trillion, five hundred sixteen billion, six hundred forty-two million, three hundred eighty-seven thousand, two hundred twenty".