201320739877 has 2 divisors, whose sum is σ = 201320739878. Its totient is φ = 201320739876.

The previous prime is 201320739863. The next prime is 201320739899. The reversal of 201320739877 is 778937023102.

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., 186320859201 + 14999880676 = 431649^2 + 122474^2 .

It is a cyclic number.

It is not a de Polignac number, because 201320739877 - 2¹⁹ = 201320215589 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201320739877.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201320733877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100660369938 + 100660369939.

It is an arithmetic number, because the mean of its divisors is an integer number (100660369939).

Almost surely, 2^201320739877 is an apocalyptic number.

It is an amenable number.

201320739877 is a deficient number, since it is larger than the sum of its proper divisors (1).

201320739877 is an equidigital number, since it uses as much as digits as its factorization.

201320739877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 201320739877 in words is "two hundred one billion, three hundred twenty million, seven hundred thirty-nine thousand, eight hundred seventy-seven".