2666937161 has 20 divisors (see below), whose sum is σ = 3211693824. Its totient is φ = 2212144200.

The previous prime is 2666937149. The next prime is 2666937173. The reversal of 2666937161 is 1617396662.

It is an interprime number because it is at equal distance from previous prime (2666937149) and next prime (2666937173).

It is not a de Polignac number, because 2666937161 - 2¹⁰ = 2666936137 is a prime.

It is a super-2 number, since 2×2666937161² = 14225107641445479842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666937131) 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 19 ways as a sum of consecutive naturals, for example, 56516 + ... + 92346.

Almost surely, 2^2666937161 is an apocalyptic number.

It is an amenable number.

2666937161 is a deficient number, since it is larger than the sum of its proper divisors (544756663).

2666937161 is an frugal number, since it uses more digits than its factorization.

2666937161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35890 (or 35869 counting only the distinct ones).

The product of its digits is 489888, while the sum is 47.

The square root of 2666937161 is about 51642.3969331401. The cubic root of 2666937161 is about 1386.7694346899.

The spelling of 2666937161 in words is "two billion, six hundred sixty-six million, nine hundred thirty-seven thousand, one hundred sixty-one".