136420353402247 has 2 divisors, whose sum is σ = 136420353402248. Its totient is φ = 136420353402246.

The previous prime is 136420353402233. The next prime is 136420353402259. The reversal of 136420353402247 is 742204353024631.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 136420353402247 - 2²³ = 136420345013639 is a prime.

It is a super-2 number, since 2×136420353402247² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 136420353402197 and 136420353402206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136420353402847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68210176701123 + 68210176701124.

It is an arithmetic number, because the mean of its divisors is an integer number (68210176701124).

Almost surely, 2^{136420353402247} is an apocalyptic number.

136420353402247 is a deficient number, since it is larger than the sum of its proper divisors (1).

136420353402247 is an equidigital number, since it uses as much as digits as its factorization.

136420353402247 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2903040, while the sum is 46.

The spelling of 136420353402247 in words is "one hundred thirty-six trillion, four hundred twenty billion, three hundred fifty-three million, four hundred two thousand, two hundred forty-seven".