2171543451213 has 16 divisors (see below), whose sum is σ = 2979941207040. Its totient is φ = 1406011923504.

The previous prime is 2171543451149. The next prime is 2171543451221. The reversal of 2171543451213 is 3121543451712.

It is not a de Polignac number, because 2171543451213 - 2⁶ = 2171543451149 is a prime.

It is a super-2 number, since 2×2171543451213² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171543451713) 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 15 ways as a sum of consecutive naturals, for example, 73892581 + ... + 73921962.

It is an arithmetic number, because the mean of its divisors is an integer number (186246325440).

Almost surely, 2^{2171543451213} is an apocalyptic number.

It is an amenable number.

2171543451213 is a deficient number, since it is larger than the sum of its proper divisors (808397755827).

2171543451213 is a wasteful number, since it uses less digits than its factorization.

2171543451213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147814688.

The product of its digits is 100800, while the sum is 39.

The spelling of 2171543451213 in words is "two trillion, one hundred seventy-one billion, five hundred forty-three million, four hundred fifty-one thousand, two hundred thirteen".