2612661222171 has 72 divisors (see below), whose sum is σ = 4786891712064. Its totient is φ = 1252824431040.

The previous prime is 2612661222139. The next prime is 2612661222191. The reversal of 2612661222171 is 1712221662162.

It is not a de Polignac number, because 2612661222171 - 2⁵ = 2612661222139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (2612661222191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4507041 + ... + 5053586.

It is an arithmetic number, because the mean of its divisors is an integer number (66484607112).

Almost surely, 2^{2612661222171} is an apocalyptic number.

2612661222171 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2612661222171 is a deficient number, since it is larger than the sum of its proper divisors (2174230489893).

2612661222171 is a wasteful number, since it uses less digits than its factorization.

2612661222171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9560681 (or 9560661 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The spelling of 2612661222171 in words is "two trillion, six hundred twelve billion, six hundred sixty-one million, two hundred twenty-two thousand, one hundred seventy-one".