16705276651 has 4 divisors (see below), whose sum is σ = 19091744752. Its totient is φ = 14318808552.

The previous prime is 16705276649. The next prime is 16705276657. The reversal of 16705276651 is 15667250761.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15667250761 = 2953 ⋅5305537.

It is a cyclic number.

It is not a de Polignac number, because 16705276651 - 2¹ = 16705276649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16705276657) 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, 1193234040 + ... + 1193234053.

It is an arithmetic number, because the mean of its divisors is an integer number (4772936188).

Almost surely, 2^16705276651 is an apocalyptic number.

16705276651 is a deficient number, since it is larger than the sum of its proper divisors (2386468101).

16705276651 is an equidigital number, since it uses as much as digits as its factorization.

16705276651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386468100.

The product of its (nonzero) digits is 529200, while the sum is 46.

The spelling of 16705276651 in words is "sixteen billion, seven hundred five million, two hundred seventy-six thousand, six hundred fifty-one".