213172489633 has 2 divisors, whose sum is σ = 213172489634. Its totient is φ = 213172489632.

The previous prime is 213172489627. The next prime is 213172489639. The reversal of 213172489633 is 336984271312.

It is a balanced prime because it is at equal distance from previous prime (213172489627) and next prime (213172489639).

It can be written as a sum of positive squares in only one way, i.e., 112434807969 + 100737681664 = 335313^2 + 317392^2 .

It is a cyclic number.

It is not a de Polignac number, because 213172489633 - 2²⁵ = 213138935201 is a prime.

It is not a weakly prime, because it can be changed into another prime (213172489639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106586244816 + 106586244817.

It is an arithmetic number, because the mean of its divisors is an integer number (106586244817).

Almost surely, 2^213172489633 is an apocalyptic number.

It is an amenable number.

213172489633 is a deficient number, since it is larger than the sum of its proper divisors (1).

213172489633 is an equidigital number, since it uses as much as digits as its factorization.

213172489633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 49.

The spelling of 213172489633 in words is "two hundred thirteen billion, one hundred seventy-two million, four hundred eighty-nine thousand, six hundred thirty-three".