16557643037516 has 96 divisors (see below), whose sum is σ = 33534237918720. Its totient is φ = 7006978358784.

The previous prime is 16557643037491. The next prime is 16557643037569. The reversal of 16557643037516 is 61573034675561.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1284627200 + ... + 1284640088.

It is an arithmetic number, because the mean of its divisors is an integer number (349314978320).

Almost surely, 2^{16557643037516} is an apocalyptic number.

It is an amenable number.

16557643037516 is an abundant number, since it is smaller than the sum of its proper divisors (16976594881204).

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

16557643037516 is a wasteful number, since it uses less digits than its factorization.

16557643037516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14863 (or 14861 counting only the distinct ones).

The product of its (nonzero) digits is 47628000, while the sum is 59.

The spelling of 16557643037516 in words is "sixteen trillion, five hundred fifty-seven billion, six hundred forty-three million, thirty-seven thousand, five hundred sixteen".