16261066551 has 8 divisors (see below), whose sum is σ = 21745759984. Its totient is φ = 10808542080.

The previous prime is 16261066531. The next prime is 16261066553. The reversal of 16261066551 is 15566016261.

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

It is not a de Polignac number, because 16261066551 - 2⁵ = 16261066519 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 (16261066553) 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, 8041060 + ... + 8043081.

It is an arithmetic number, because the mean of its divisors is an integer number (2718219998).

Almost surely, 2^16261066551 is an apocalyptic number.

16261066551 is a deficient number, since it is larger than the sum of its proper divisors (5484693433).

16261066551 is a wasteful number, since it uses less digits than its factorization.

16261066551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16084481.

The product of its (nonzero) digits is 64800, while the sum is 39.

The spelling of 16261066551 in words is "sixteen billion, two hundred sixty-one million, sixty-six thousand, five hundred fifty-one".