136203172187 has 2 divisors, whose sum is σ = 136203172188. Its totient is φ = 136203172186.

The previous prime is 136203172141. The next prime is 136203172223. The reversal of 136203172187 is 781271302631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136203172187 - 2⁶ = 136203172123 is a prime.

It is a super-2 number, since 2×136203172187² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (136203112187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68101586093 + 68101586094.

It is an arithmetic number, because the mean of its divisors is an integer number (68101586094).

Almost surely, 2^136203172187 is an apocalyptic number.

136203172187 is a deficient number, since it is larger than the sum of its proper divisors (1).

136203172187 is an equidigital number, since it uses as much as digits as its factorization.

136203172187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 136203172187 in words is "one hundred thirty-six billion, two hundred three million, one hundred seventy-two thousand, one hundred eighty-seven".