16551377510672 has 20 divisors (see below), whose sum is σ = 32594003665356. Its totient is φ = 8140021726080.

The previous prime is 16551377510659. The next prime is 16551377510677. The reversal of 16551377510672 is 27601577315561.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1469680988416 + 15081696522256 = 1212304^2 + 3883516^2 .

It is not an unprimeable number, because it can be changed into a prime (16551377510677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8479188323 + ... + 8479190274.

Almost surely, 2^{16551377510672} is an apocalyptic number.

It is an amenable number.

16551377510672 is a deficient number, since it is larger than the sum of its proper divisors (16042626154684).

16551377510672 is a wasteful number, since it uses less digits than its factorization.

16551377510672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16958378666 (or 16958378660 counting only the distinct ones).

The product of its (nonzero) digits is 9261000, while the sum is 56.

The spelling of 16551377510672 in words is "sixteen trillion, five hundred fifty-one billion, three hundred seventy-seven million, five hundred ten thousand, six hundred seventy-two".