135520161436 has 24 divisors (see below), whose sum is σ = 269969019264. Its totient is φ = 58921808880.

The previous prime is 135520161421. The next prime is 135520161437. The reversal of 135520161436 is 634161025531.

It is a junction number, because it is equal to n+sod(n) for n = 135520161395 and 135520161404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135520161437) 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, 66955590 + ... + 66957613.

It is an arithmetic number, because the mean of its divisors is an integer number (11248709136).

Almost surely, 2^135520161436 is an apocalyptic number.

It is an amenable number.

135520161436 is a deficient number, since it is larger than the sum of its proper divisors (134448857828).

135520161436 is a wasteful number, since it uses less digits than its factorization.

135520161436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133913241 (or 133913239 counting only the distinct ones).

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

Adding to 135520161436 its reverse (634161025531), we get a palindrome (769681186967).

The spelling of 135520161436 in words is "one hundred thirty-five billion, five hundred twenty million, one hundred sixty-one thousand, four hundred thirty-six".