202742407811 has 2 divisors, whose sum is σ = 202742407812. Its totient is φ = 202742407810.

The previous prime is 202742407793. The next prime is 202742407853. The reversal of 202742407811 is 118704247202.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202742407811 is a prime.

It is a super-2 number, since 2×202742407811² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (202742407871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101371203905 + 101371203906.

It is an arithmetic number, because the mean of its divisors is an integer number (101371203906).

Almost surely, 2^202742407811 is an apocalyptic number.

202742407811 is a deficient number, since it is larger than the sum of its proper divisors (1).

202742407811 is an equidigital number, since it uses as much as digits as its factorization.

202742407811 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 50176, while the sum is 38.

The spelling of 202742407811 in words is "two hundred two billion, seven hundred forty-two million, four hundred seven thousand, eight hundred eleven".