163431435560 has 32 divisors (see below), whose sum is σ = 367732253160. Its totient is φ = 65370525696.

The previous prime is 163431435553. The next prime is 163431435613. The reversal of 163431435560 is 65534134361.

It can be written as a sum of positive squares in 4 ways, for example, as 129546725476 + 33884710084 = 359926^2 + 184078^2 .

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, 2386112 + ... + 2453648.

Almost surely, 2^163431435560 is an apocalyptic number.

163431435560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163431435560 is an abundant number, since it is smaller than the sum of its proper divisors (204300817600).

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

163431435560 is a wasteful number, since it uses less digits than its factorization.

163431435560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128045 (or 128041 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 41.

The spelling of 163431435560 in words is "one hundred sixty-three billion, four hundred thirty-one million, four hundred thirty-five thousand, five hundred sixty".