2161627677 has 12 divisors (see below), whose sum is σ = 3406201344. Its totient is φ = 1310077320.

The previous prime is 2161627649. The next prime is 2161627687. The reversal of 2161627677 is 7767261612.

2161627677 is a `hidden beast` number, since 2 + 1 + 616 + 27 + 6 + 7 + 7 = 666.

It is not a de Polignac number, because 2161627677 - 2¹⁴ = 2161611293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161627687) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10917213 + ... + 10917410.

It is an arithmetic number, because the mean of its divisors is an integer number (283850112).

Almost surely, 2^2161627677 is an apocalyptic number.

It is an amenable number.

2161627677 is a deficient number, since it is larger than the sum of its proper divisors (1244573667).

2161627677 is a wasteful number, since it uses less digits than its factorization.

2161627677 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21834640 (or 21834637 counting only the distinct ones).

The product of its digits is 296352, while the sum is 45.

The square root of 2161627677 is about 46493.3078732843. The cubic root of 2161627677 is about 1292.9854291419.

The spelling of 2161627677 in words is "two billion, one hundred sixty-one million, six hundred twenty-seven thousand, six hundred seventy-seven".