209303902051 has 2 divisors, whose sum is σ = 209303902052. Its totient is φ = 209303902050.

The previous prime is 209303902043. The next prime is 209303902081. The reversal of 209303902051 is 150209303902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 209303902051 - 2³ = 209303902043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 209303901998 and 209303902016.

It is not a weakly prime, because it can be changed into another prime (209303902021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104651951025 + 104651951026.

It is an arithmetic number, because the mean of its divisors is an integer number (104651951026).

Almost surely, 2^209303902051 is an apocalyptic number.

209303902051 is a deficient number, since it is larger than the sum of its proper divisors (1).

209303902051 is an equidigital number, since it uses as much as digits as its factorization.

209303902051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14580, while the sum is 34.

The spelling of 209303902051 in words is "two hundred nine billion, three hundred three million, nine hundred two thousand, fifty-one".