2173637955213 has 24 divisors (see below), whose sum is σ = 3344294011968. Its totient is φ = 1355684476032.

The previous prime is 2173637955211. The next prime is 2173637955241. The reversal of 2173637955213 is 3125597363712.

It is a happy number.

2173637955213 is a `hidden beast` number, since 2 + 1 + 7 + 3 + 6 + 3 + 79 + 552 + 13 = 666.

It is not a de Polignac number, because 2173637955213 - 2¹ = 2173637955211 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2173637955213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2173637955211) 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 23 ways as a sum of consecutive naturals, for example, 42509731 + ... + 42560832.

It is an arithmetic number, because the mean of its divisors is an integer number (139345583832).

Almost surely, 2^{2173637955213} is an apocalyptic number.

It is an amenable number.

2173637955213 is a deficient number, since it is larger than the sum of its proper divisors (1170656056755).

2173637955213 is a wasteful number, since it uses less digits than its factorization.

2173637955213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85070753 (or 85070750 counting only the distinct ones).

The product of its digits is 7144200, while the sum is 54.

The spelling of 2173637955213 in words is "two trillion, one hundred seventy-three billion, six hundred thirty-seven million, nine hundred fifty-five thousand, two hundred thirteen".