16551051601 has 8 divisors (see below), whose sum is σ = 19911039680. Its totient is φ = 13439951568.

The previous prime is 16551051553. The next prime is 16551051619. The reversal of 16551051601 is 10615015561.

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

It is not a de Polignac number, because 16551051601 - 2²¹ = 16548954449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16551051631) 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, 62221866 + ... + 62222131.

It is an arithmetic number, because the mean of its divisors is an integer number (2488879960).

Almost surely, 2^16551051601 is an apocalyptic number.

It is an amenable number.

16551051601 is a deficient number, since it is larger than the sum of its proper divisors (3359988079).

16551051601 is a wasteful number, since it uses less digits than its factorization.

16551051601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124444023.

The product of its (nonzero) digits is 4500, while the sum is 31.

The spelling of 16551051601 in words is "sixteen billion, five hundred fifty-one million, fifty-one thousand, six hundred one".