2631516669 has 6 divisors (see below), whose sum is σ = 3801079646. Its totient is φ = 1754344440.

The previous prime is 2631516661. The next prime is 2631516689. The reversal of 2631516669 is 9666151362.

It can be written as a sum of positive squares in only one way, i.e., 1852269444 + 779247225 = 43038^2 + 27915^2 .

It is not a de Polignac number, because 2631516669 - 2³ = 2631516661 is a prime.

It is a super-2 number, since 2×2631516669² = 13849759958449711122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2631516661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 146195362 + ... + 146195379.

Almost surely, 2^2631516669 is an apocalyptic number.

It is an amenable number.

2631516669 is a deficient number, since it is larger than the sum of its proper divisors (1169562977).

2631516669 is a wasteful number, since it uses less digits than its factorization.

2631516669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292390747 (or 292390744 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 2631516669 is about 51298.3105862172. The cubic root of 2631516669 is about 1380.6026683986.

The spelling of 2631516669 in words is "two billion, six hundred thirty-one million, five hundred sixteen thousand, six hundred sixty-nine".