16361804638158 has 48 divisors (see below), whose sum is σ = 38643727178880. Its totient is φ = 4524001271280.

The previous prime is 16361804638147. The next prime is 16361804638247. The reversal of 16361804638158 is 85183640816361.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 202647868 + ... + 202728591.

It is an arithmetic number, because the mean of its divisors is an integer number (805077649560).

Almost surely, 2^{16361804638158} is an apocalyptic number.

16361804638158 is an abundant number, since it is smaller than the sum of its proper divisors (22281922540722).

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

16361804638158 is a wasteful number, since it uses less digits than its factorization.

16361804638158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 405376533 (or 405376502 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 60.

The spelling of 16361804638158 in words is "sixteen trillion, three hundred sixty-one billion, eight hundred four million, six hundred thirty-eight thousand, one hundred fifty-eight".