135136212041 has 4 divisors (see below), whose sum is σ = 135137122692. Its totient is φ = 135135301392.

The previous prime is 135136212037. The next prime is 135136212053. The reversal of 135136212041 is 140212631531.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 87450318400 + 47685893641 = 295720^2 + 218371^2 .

It is a cyclic number.

It is not a de Polignac number, because 135136212041 - 2² = 135136212037 is a prime.

It is a super-2 number, since 2×135136212041² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135136211995 and 135136212013.

It is not an unprimeable number, because it can be changed into a prime (135136212941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175346 + ... + 548651.

It is an arithmetic number, because the mean of its divisors is an integer number (33784280673).

Almost surely, 2^135136212041 is an apocalyptic number.

It is an amenable number.

135136212041 is a deficient number, since it is larger than the sum of its proper divisors (910651).

135136212041 is an equidigital number, since it uses as much as digits as its factorization.

135136212041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910650.

The product of its (nonzero) digits is 4320, while the sum is 29.

Adding to 135136212041 its reverse (140212631531), we get a palindrome (275348843572).

The spelling of 135136212041 in words is "one hundred thirty-five billion, one hundred thirty-six million, two hundred twelve thousand, forty-one".