2661212626 has 8 divisors (see below), whose sum is σ = 3992849280. Its totient is φ = 1330262868.

The previous prime is 2661212537. The next prime is 2661212629. The reversal of 2661212626 is 6262121662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2661212591 and 2661212600.

It is not an unprimeable number, because it can be changed into a prime (2661212629) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161926 + ... + 177601.

It is an arithmetic number, because the mean of its divisors is an integer number (499106160).

Almost surely, 2^2661212626 is an apocalyptic number.

2661212626 is a deficient number, since it is larger than the sum of its proper divisors (1331636654).

2661212626 is a wasteful number, since it uses less digits than its factorization.

2661212626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343448.

The product of its digits is 20736, while the sum is 34.

The square root of 2661212626 is about 51586.9423982465. The cubic root of 2661212626 is about 1385.7764982864.

The spelling of 2661212626 in words is "two billion, six hundred sixty-one million, two hundred twelve thousand, six hundred twenty-six".