16550393018 has 8 divisors (see below), whose sum is σ = 25015098240. Its totient is φ = 8212026940.

The previous prime is 16550393009. The next prime is 16550393021. The reversal of 16550393018 is 81039305561.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31584458 + ... + 31584981.

It is an arithmetic number, because the mean of its divisors is an integer number (3126887280).

Almost surely, 2^16550393018 is an apocalyptic number.

16550393018 is a deficient number, since it is larger than the sum of its proper divisors (8464705222).

16550393018 is a wasteful number, since it uses less digits than its factorization.

16550393018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63169572.

The product of its (nonzero) digits is 97200, while the sum is 41.

Adding to 16550393018 its reverse (81039305561), we get a palindrome (97589698579).

The spelling of 16550393018 in words is "sixteen billion, five hundred fifty million, three hundred ninety-three thousand, eighteen".