16551232157623 has 8 divisors (see below), whose sum is σ = 16562515507200. Its totient is φ = 16539949666008.

The previous prime is 16551232157599. The next prime is 16551232157771. The reversal of 16551232157623 is 32675123215561.

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

It is a cyclic number.

It is not a de Polignac number, because 16551232157623 - 2³³ = 16542642223031 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 (16551232157023) 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 7 ways as a sum of consecutive naturals, for example, 41080290 + ... + 41481232.

It is an arithmetic number, because the mean of its divisors is an integer number (2070314438400).

Almost surely, 2^{16551232157623} is an apocalyptic number.

16551232157623 is a deficient number, since it is larger than the sum of its proper divisors (11283349577).

16551232157623 is a wasteful number, since it uses less digits than its factorization.

16551232157623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428981.

The product of its digits is 2268000, while the sum is 49.

The spelling of 16551232157623 in words is "sixteen trillion, five hundred fifty-one billion, two hundred thirty-two million, one hundred fifty-seven thousand, six hundred twenty-three".