135621337037108 has 12 divisors (see below), whose sum is σ = 255594058262340. Its totient is φ = 62594463247872.

The previous prime is 135621337037089. The next prime is 135621337037141. The reversal of 135621337037108 is 801730733126531.

It can be written as a sum of positive squares in 2 ways, for example, as 9292998627364 + 126328338409744 = 3048442^2 + 11239588^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1304051317613 + ... + 1304051317716.

It is an arithmetic number, because the mean of its divisors is an integer number (21299504855195).

Almost surely, 2^{135621337037108} is an apocalyptic number.

It is an amenable number.

135621337037108 is a deficient number, since it is larger than the sum of its proper divisors (119972721225232).

135621337037108 is a wasteful number, since it uses less digits than its factorization.

135621337037108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2608102635346 (or 2608102635344 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 50.

The spelling of 135621337037108 in words is "one hundred thirty-five trillion, six hundred twenty-one billion, three hundred thirty-seven million, thirty-seven thousand, one hundred eight".