200542939787 has 2 divisors, whose sum is σ = 200542939788. Its totient is φ = 200542939786.

The previous prime is 200542939781. The next prime is 200542939843. The reversal of 200542939787 is 787939245002.

200542939787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (200542939843) can be obtained adding 200542939787 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 200542939787 - 2²⁰ = 200541891211 is a prime.

It is not a weakly prime, because it can be changed into another prime (200542939781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100271469893 + 100271469894.

It is an arithmetic number, because the mean of its divisors is an integer number (100271469894).

Almost surely, 2^200542939787 is an apocalyptic number.

200542939787 is a deficient number, since it is larger than the sum of its proper divisors (1).

200542939787 is an equidigital number, since it uses as much as digits as its factorization.

200542939787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 200542939787 in words is "two hundred billion, five hundred forty-two million, nine hundred thirty-nine thousand, seven hundred eighty-seven".