201332879009 has 2 divisors, whose sum is σ = 201332879010. Its totient is φ = 201332879008.

The previous prime is 201332878987. The next prime is 201332879057. The reversal of 201332879009 is 900978233102.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182972629009 + 18360250000 = 427753^2 + 135500^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201332879009 is a prime.

It is not a weakly prime, because it can be changed into another prime (201332879089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100666439504 + 100666439505.

It is an arithmetic number, because the mean of its divisors is an integer number (100666439505).

Almost surely, 2^201332879009 is an apocalyptic number.

It is an amenable number.

201332879009 is a deficient number, since it is larger than the sum of its proper divisors (1).

201332879009 is an equidigital number, since it uses as much as digits as its factorization.

201332879009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The spelling of 201332879009 in words is "two hundred one billion, three hundred thirty-two million, eight hundred seventy-nine thousand, nine".