16506011206651 has 8 divisors (see below), whose sum is σ = 17374788532800. Its totient is φ = 15637237869960.

The previous prime is 16506011206627. The next prime is 16506011206681. The reversal of 16506011206651 is 15660211060561.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16506011206651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16506011206681) 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, 11529816 + ... + 12882106.

It is an arithmetic number, because the mean of its divisors is an integer number (2171848566600).

Almost surely, 2^{16506011206651} is an apocalyptic number.

16506011206651 is a deficient number, since it is larger than the sum of its proper divisors (868777326149).

16506011206651 is a wasteful number, since it uses less digits than its factorization.

16506011206651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1994729.

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 16506011206651 in words is "sixteen trillion, five hundred six billion, eleven million, two hundred six thousand, six hundred fifty-one".