2651668669 has 16 divisors (see below), whose sum is σ = 2950097920. Its totient is φ = 2366858880.

The previous prime is 2651668639. The next prime is 2651668703. The reversal of 2651668669 is 9668661562.

It is a cyclic number.

It is not a de Polignac number, because 2651668669 - 2⁷ = 2651668541 is a prime.

It is a super-2 number, since 2×2651668669² = 14062693460312463122, 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 (2651668609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 859672 + ... + 862750.

It is an arithmetic number, because the mean of its divisors is an integer number (184381120).

Almost surely, 2^2651668669 is an apocalyptic number.

It is an amenable number.

2651668669 is a deficient number, since it is larger than the sum of its proper divisors (298429251).

2651668669 is a wasteful number, since it uses less digits than its factorization.

2651668669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260.

The product of its digits is 5598720, while the sum is 55.

The square root of 2651668669 is about 51494.3557004066. The cubic root of 2651668669 is about 1384.1179018263.

It can be divided in two parts, 26 and 51668669, that added together give a triangular number (51668695 = T₁₀₁₆₅).

The spelling of 2651668669 in words is "two billion, six hundred fifty-one million, six hundred sixty-eight thousand, six hundred sixty-nine".