163612355342440 has 64 divisors (see below), whose sum is σ = 368313824736000. Its totient is φ = 65411874955008.

The previous prime is 163612355342417. The next prime is 163612355342467. The reversal of 163612355342440 is 44243553216361.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1564164222 + ... + 1564268818.

It is an arithmetic number, because the mean of its divisors is an integer number (5754903511500).

Almost surely, 2^{163612355342440} is an apocalyptic number.

163612355342440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

163612355342440 is an abundant number, since it is smaller than the sum of its proper divisors (204701469393560).

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

163612355342440 is a wasteful number, since it uses less digits than its factorization.

163612355342440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123994 (or 123990 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 163612355342440 in words is "one hundred sixty-three trillion, six hundred twelve billion, three hundred fifty-five million, three hundred forty-two thousand, four hundred forty".