200999978635103 has 2 divisors, whose sum is σ = 200999978635104. Its totient is φ = 200999978635102.

The previous prime is 200999978635087. The next prime is 200999978635117. The reversal of 200999978635103 is 301536879999002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 200999978635103 - 2⁴ = 200999978635087 is a prime.

It is a super-2 number, since 2×200999978635103² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200999978635163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100499989317551 + 100499989317552.

It is an arithmetic number, because the mean of its divisors is an integer number (100499989317552).

Almost surely, 2^{200999978635103} is an apocalyptic number.

200999978635103 is a deficient number, since it is larger than the sum of its proper divisors (1).

200999978635103 is an equidigital number, since it uses as much as digits as its factorization.

200999978635103 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198404640, while the sum is 71.

The spelling of 200999978635103 in words is "two hundred trillion, nine hundred ninety-nine billion, nine hundred seventy-eight million, six hundred thirty-five thousand, one hundred three".