201020577899 has 2 divisors, whose sum is σ = 201020577900. Its totient is φ = 201020577898.

The previous prime is 201020577889. The next prime is 201020577949. The reversal of 201020577899 is 998775020102.

It is an a-pointer prime, because the next prime (201020577949) can be obtained adding 201020577899 to its sum of digits (50).

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201020577899 is a prime.

It is not a weakly prime, because it can be changed into another prime (201020577889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100510288949 + 100510288950.

It is an arithmetic number, because the mean of its divisors is an integer number (100510288950).

Almost surely, 2^201020577899 is an apocalyptic number.

201020577899 is a deficient number, since it is larger than the sum of its proper divisors (1).

201020577899 is an equidigital number, since it uses as much as digits as its factorization.

201020577899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 50.

The spelling of 201020577899 in words is "two hundred one billion, twenty million, five hundred seventy-seven thousand, eight hundred ninety-nine".