16551110557 has 8 divisors (see below), whose sum is σ = 16603608960. Its totient is φ = 16498685280.

The previous prime is 16551110551. The next prime is 16551110561. The reversal of 16551110557 is 75501115561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16551110557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16551110551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 454257 + ... + 489337.

It is an arithmetic number, because the mean of its divisors is an integer number (2075451120).

Almost surely, 2^16551110557 is an apocalyptic number.

It is an amenable number.

16551110557 is a deficient number, since it is larger than the sum of its proper divisors (52498403).

16551110557 is a wasteful number, since it uses less digits than its factorization.

16551110557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36563.

The product of its (nonzero) digits is 26250, while the sum is 37.

The spelling of 16551110557 in words is "sixteen billion, five hundred fifty-one million, one hundred ten thousand, five hundred fifty-seven".