135401512636 has 24 divisors (see below), whose sum is σ = 257706316224. Its totient is φ = 61874260800.

The previous prime is 135401512621. The next prime is 135401512639. The reversal of 135401512636 is 636215104531.

It is a junction number, because it is equal to n+sod(n) for n = 135401512595 and 135401512604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135401512639) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12885220 + ... + 12895723.

It is an arithmetic number, because the mean of its divisors is an integer number (10737763176).

Almost surely, 2^135401512636 is an apocalyptic number.

It is an amenable number.

135401512636 is a deficient number, since it is larger than the sum of its proper divisors (122304803588).

135401512636 is a wasteful number, since it uses less digits than its factorization.

135401512636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25781061 (or 25781059 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 135401512636 in words is "one hundred thirty-five billion, four hundred one million, five hundred twelve thousand, six hundred thirty-six".