16276824661 has 4 divisors (see below), whose sum is σ = 16295686272. Its totient is φ = 16257963052.

The previous prime is 16276824659. The next prime is 16276824679. The reversal of 16276824661 is 16642867261.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16276824661 - 2¹ = 16276824659 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 (16276864661) 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, 9429511 + ... + 9431236.

It is an arithmetic number, because the mean of its divisors is an integer number (4073921568).

Almost surely, 2^16276824661 is an apocalyptic number.

It is an amenable number.

16276824661 is a deficient number, since it is larger than the sum of its proper divisors (18861611).

16276824661 is an equidigital number, since it uses as much as digits as its factorization.

16276824661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18861610.

The product of its digits is 1161216, while the sum is 49.

The spelling of 16276824661 in words is "sixteen billion, two hundred seventy-six million, eight hundred twenty-four thousand, six hundred sixty-one".