136402411786805 has 8 divisors (see below), whose sum is σ = 163683223812792. Its totient is φ = 109121709650368.

The previous prime is 136402411786759. The next prime is 136402411786831. The reversal of 136402411786805 is 508687114204631.

It can be written as a sum of positive squares in 4 ways, for example, as 116563519396 + 136285848267409 = 341414^2 + 11674153^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 136402411786805 - 2¹⁶ = 136402411721269 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24716462 + ... + 29727231.

It is an arithmetic number, because the mean of its divisors is an integer number (20460402976599).

Almost surely, 2^{136402411786805} is an apocalyptic number.

It is an amenable number.

136402411786805 is a deficient number, since it is larger than the sum of its proper divisors (27280812025987).

136402411786805 is an equidigital number, since it uses as much as digits as its factorization.

136402411786805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54944775.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 136402411786805 in words is "one hundred thirty-six trillion, four hundred two billion, four hundred eleven million, seven hundred eighty-six thousand, eight hundred five".