16118821735500 has 96 divisors (see below), whose sum is σ = 51205100663808. Its totient is φ = 3907593144000.

The previous prime is 16118821735469. The next prime is 16118821735507. The reversal of 16118821735500 is 553712881161.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16118821735500.

It is not an unprimeable number, because it can be changed into a prime (16118821735507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 488432644 + ... + 488465643.

It is an arithmetic number, because the mean of its divisors is an integer number (533386465248).

Almost surely, 2^{16118821735500} is an apocalyptic number.

16118821735500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16118821735500 is an abundant number, since it is smaller than the sum of its proper divisors (35086278928308).

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

16118821735500 is a wasteful number, since it uses less digits than its factorization.

16118821735500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 976898320 (or 976898308 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 48.

The spelling of 16118821735500 in words is "sixteen trillion, one hundred eighteen billion, eight hundred twenty-one million, seven hundred thirty-five thousand, five hundred".