213433329961 has 2 divisors, whose sum is σ = 213433329962. Its totient is φ = 213433329960.

The previous prime is 213433329947. The next prime is 213433330001. The reversal of 213433329961 is 169923334312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189394688025 + 24038641936 = 435195^2 + 155044^2 .

It is a cyclic number.

It is not a de Polignac number, because 213433329961 - 2⁵ = 213433329929 is a prime.

It is a super-2 number, since 2×213433329961² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (213433029961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106716664980 + 106716664981.

It is an arithmetic number, because the mean of its divisors is an integer number (106716664981).

Almost surely, 2^213433329961 is an apocalyptic number.

It is an amenable number.

213433329961 is a deficient number, since it is larger than the sum of its proper divisors (1).

213433329961 is an equidigital number, since it uses as much as digits as its factorization.

213433329961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 46.

The spelling of 213433329961 in words is "two hundred thirteen billion, four hundred thirty-three million, three hundred twenty-nine thousand, nine hundred sixty-one".