136135612745781 has 16 divisors (see below), whose sum is σ = 198113125736448. Its totient is φ = 82465728210800.

The previous prime is 136135612745771. The next prime is 136135612745833. The reversal of 136135612745781 is 187547216531631.

It is a happy number.

136135612745781 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 136135612745781 - 2¹⁹ = 136135612221493 is a prime.

It is a super-2 number, since 2×136135612745781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136135612745771) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1017526005 + ... + 1017659786.

It is an arithmetic number, because the mean of its divisors is an integer number (12382070358528).

Almost surely, 2^{136135612745781} is an apocalyptic number.

136135612745781 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

136135612745781 is a deficient number, since it is larger than the sum of its proper divisors (61977512990667).

136135612745781 is a wasteful number, since it uses less digits than its factorization.

136135612745781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2035187832.

The product of its digits is 25401600, while the sum is 60.

The spelling of 136135612745781 in words is "one hundred thirty-six trillion, one hundred thirty-five billion, six hundred twelve million, seven hundred forty-five thousand, seven hundred eighty-one".