135621107487548 has 12 divisors (see below), whose sum is σ = 241359598071480. Its totient is φ = 66661222324272.

The previous prime is 135621107487529. The next prime is 135621107487553. The reversal of 135621107487548 is 845784701126531.

It is a super-2 number, since 2×135621107487548² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 287332854611 + ... + 287332855082.

It is an arithmetic number, because the mean of its divisors is an integer number (20113299839290).

Almost surely, 2^{135621107487548} is an apocalyptic number.

It is an amenable number.

135621107487548 is a deficient number, since it is larger than the sum of its proper divisors (105738490583932).

135621107487548 is a wasteful number, since it uses less digits than its factorization.

135621107487548 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574665709756 (or 574665709754 counting only the distinct ones).

The product of its (nonzero) digits is 45158400, while the sum is 62.

The spelling of 135621107487548 in words is "one hundred thirty-five trillion, six hundred twenty-one billion, one hundred seven million, four hundred eighty-seven thousand, five hundred forty-eight".