163434343250040 has 128 divisors (see below), whose sum is σ = 497436297707520. Its totient is φ = 42952968576000.

The previous prime is 163434343250027. The next prime is 163434343250083. The reversal of 163434343250040 is 40052343434361.

It is a junction number, because it is equal to n+sod(n) for n = 163434343249974 and 163434343250001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33208821 + ... + 37811300.

It is an arithmetic number, because the mean of its divisors is an integer number (3886221075840).

Almost surely, 2^{163434343250040} is an apocalyptic number.

163434343250040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163434343250040 is an abundant number, since it is smaller than the sum of its proper divisors (334001954457480).

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

163434343250040 is a wasteful number, since it uses less digits than its factorization.

163434343250040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71020413 (or 71020409 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 42.

The spelling of 163434343250040 in words is "one hundred sixty-three trillion, four hundred thirty-four billion, three hundred forty-three million, two hundred fifty thousand, forty".