213432027461 has 2 divisors, whose sum is σ = 213432027462. Its totient is φ = 213432027460.

The previous prime is 213432027451. The next prime is 213432027463. The reversal of 213432027461 is 164720234312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 123668272225 + 89763755236 = 351665^2 + 299606^2 .

It is a cyclic number.

It is not a de Polignac number, because 213432027461 - 2²⁶ = 213364918597 is a prime.

It is a super-2 number, since 2×213432027461² (a number of 23 digits) contains 22 as substring.

Together with 213432027463, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213432027463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106716013730 + 106716013731.

It is an arithmetic number, because the mean of its divisors is an integer number (106716013731).

Almost surely, 2^213432027461 is an apocalyptic number.

It is an amenable number.

213432027461 is a deficient number, since it is larger than the sum of its proper divisors (1).

213432027461 is an equidigital number, since it uses as much as digits as its factorization.

213432027461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 35.

The spelling of 213432027461 in words is "two hundred thirteen billion, four hundred thirty-two million, twenty-seven thousand, four hundred sixty-one".