136420353402305 has 24 divisors (see below), whose sum is σ = 191398335320808. Its totient is φ = 93070535486208.

The previous prime is 136420353402269. The next prime is 136420353402329. The reversal of 136420353402305 is 503204353024631.

It can be written as a sum of positive squares in 4 ways, for example, as 49995887383729 + 86424466018576 = 7070777^2 + 9296476^2 .

It is not a de Polignac number, because 136420353402305 - 2²⁰ = 136420352353729 is a prime.

It is a super-2 number, since 2×136420353402305² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1413194804 + ... + 1413291333.

It is an arithmetic number, because the mean of its divisors is an integer number (7974930638367).

Almost surely, 2^{136420353402305} is an apocalyptic number.

It is an amenable number.

136420353402305 is a deficient number, since it is larger than the sum of its proper divisors (54977981918503).

136420353402305 is a wasteful number, since it uses less digits than its factorization.

136420353402305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826486353 (or 2826486346 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 41.

The spelling of 136420353402305 in words is "one hundred thirty-six trillion, four hundred twenty billion, three hundred fifty-three million, four hundred two thousand, three hundred five".