2661212627 has 4 divisors (see below), whose sum is σ = 2711424240. Its totient is φ = 2611001016.

The previous prime is 2661212537. The next prime is 2661212629. The reversal of 2661212627 is 7262121662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7262121662 = 2 ⋅3631060831.

It is a cyclic number.

It is not a de Polignac number, because 2661212627 - 2¹⁴ = 2661196243 is a prime.

It is a super-2 number, since 2×2661212627² = 14164105292208482258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2661212629) 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 3 ways as a sum of consecutive naturals, for example, 25105727 + ... + 25105832.

It is an arithmetic number, because the mean of its divisors is an integer number (677856060).

Almost surely, 2^2661212627 is an apocalyptic number.

2661212627 is a deficient number, since it is larger than the sum of its proper divisors (50211613).

2661212627 is an equidigital number, since it uses as much as digits as its factorization.

2661212627 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50211612.

The product of its digits is 24192, while the sum is 35.

The square root of 2661212627 is about 51586.9424079389. The cubic root of 2661212627 is about 1385.7764984600.

The spelling of 2661212627 in words is "two billion, six hundred sixty-one million, two hundred twelve thousand, six hundred twenty-seven".