16550254557 has 32 divisors (see below), whose sum is σ = 25625980800. Its totient is φ = 10543163904.

The previous prime is 16550254541. The next prime is 16550254559. The reversal of 16550254557 is 75545205561.

16550254557 is a `hidden beast` number, since 1 + 6 + 5 + 50 + 2 + 545 + 57 = 666.

It is not a de Polignac number, because 16550254557 - 2⁴ = 16550254541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16550254559) by changing a digit.

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, 33003 + ... + 184904.

It is an arithmetic number, because the mean of its divisors is an integer number (800811900).

Almost surely, 2^16550254557 is an apocalyptic number.

It is an amenable number.

16550254557 is a deficient number, since it is larger than the sum of its proper divisors (9075726243).

16550254557 is a wasteful number, since it uses less digits than its factorization.

16550254557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218042 (or 218036 counting only the distinct ones).

The product of its (nonzero) digits is 1050000, while the sum is 45.

The spelling of 16550254557 in words is "sixteen billion, five hundred fifty million, two hundred fifty-four thousand, five hundred fifty-seven".