202742781313 has 2 divisors, whose sum is σ = 202742781314. Its totient is φ = 202742781312.

The previous prime is 202742781277. The next prime is 202742781317. The reversal of 202742781313 is 313187247202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154458432144 + 48284349169 = 393012^2 + 219737^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202742781313 is a prime.

It is a super-2 number, since 2×202742781313² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202742781317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101371390656 + 101371390657.

It is an arithmetic number, because the mean of its divisors is an integer number (101371390657).

Almost surely, 2^202742781313 is an apocalyptic number.

It is an amenable number.

202742781313 is a deficient number, since it is larger than the sum of its proper divisors (1).

202742781313 is an equidigital number, since it uses as much as digits as its factorization.

202742781313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 202742781313 in words is "two hundred two billion, seven hundred forty-two million, seven hundred eighty-one thousand, three hundred thirteen".