136405385105 has 16 divisors (see below), whose sum is σ = 187965316800. Its totient is φ = 93982656960.

The previous prime is 136405384981. The next prime is 136405385107. The reversal of 136405385105 is 501583504631.

It is not a de Polignac number, because 136405385105 - 2⁸ = 136405384849 is a prime.

It is a super-2 number, since 2×136405385105² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (136405385107) 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, 65264690 + ... + 65266779.

It is an arithmetic number, because the mean of its divisors is an integer number (11747832300).

Almost surely, 2^136405385105 is an apocalyptic number.

It is an amenable number.

136405385105 is a deficient number, since it is larger than the sum of its proper divisors (51559931695).

136405385105 is a wasteful number, since it uses less digits than its factorization.

136405385105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130531504.

The product of its (nonzero) digits is 216000, while the sum is 41.

Adding to 136405385105 its reverse (501583504631), we get a palindrome (637988889736).

The spelling of 136405385105 in words is "one hundred thirty-six billion, four hundred five million, three hundred eighty-five thousand, one hundred five".