16339632965 has 4 divisors (see below), whose sum is σ = 19607559564. Its totient is φ = 13071706368.

The previous prime is 16339632949. The next prime is 16339632971. The reversal of 16339632965 is 56923693361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56923693361 = 61 ⋅933175301.

It can be written as a sum of positive squares in 2 ways, for example, as 5929308004 + 10410324961 = 77002^2 + 102031^2 .

It is a cyclic number.

It is not a de Polignac number, because 16339632965 - 2⁴ = 16339632949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633963292 + ... + 1633963301.

It is an arithmetic number, because the mean of its divisors is an integer number (4901889891).

Almost surely, 2^16339632965 is an apocalyptic number.

It is an amenable number.

16339632965 is a deficient number, since it is larger than the sum of its proper divisors (3267926599).

16339632965 is an equidigital number, since it uses as much as digits as its factorization.

16339632965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3267926598.

The product of its digits is 4723920, while the sum is 53.

The spelling of 16339632965 in words is "sixteen billion, three hundred thirty-nine million, six hundred thirty-two thousand, nine hundred sixty-five".