135220137052 has 48 divisors (see below), whose sum is σ = 317720051712. Its totient is φ = 48630617280.

The previous prime is 135220137049. The next prime is 135220137113. The reversal of 135220137052 is 250731022531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16881628 + ... + 16889635.

It is an arithmetic number, because the mean of its divisors is an integer number (6619167744).

Almost surely, 2^135220137052 is an apocalyptic number.

It is an amenable number.

135220137052 is an abundant number, since it is smaller than the sum of its proper divisors (182499914660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135220137052 is a wasteful number, since it uses less digits than its factorization.

135220137052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33771298 (or 33771296 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

Adding to 135220137052 its reverse (250731022531), we get a palindrome (385951159583).

It can be divided in two parts, 135220 and 137052, that added together give a palindrome (272272).

The spelling of 135220137052 in words is "one hundred thirty-five billion, two hundred twenty million, one hundred thirty-seven thousand, fifty-two".