135541351908 has 18 divisors (see below), whose sum is σ = 342618417414. Its totient is φ = 45180450624.

The previous prime is 135541351811. The next prime is 135541351927. The reversal of 135541351908 is 809153145531.

135541351908 is a `hidden beast` number, since 1 + 3 + 554 + 1 + 3 + 5 + 1 + 90 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 125515735524 + 10025616384 = 354282^2 + 100128^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1882518741 + ... + 1882518812.

It is an arithmetic number, because the mean of its divisors is an integer number (19034356523).

Almost surely, 2^135541351908 is an apocalyptic number.

135541351908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

135541351908 is an abundant number, since it is smaller than the sum of its proper divisors (207077065506).

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

135541351908 is a wasteful number, since it uses less digits than its factorization.

135541351908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3765037563 (or 3765037558 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 45.

The spelling of 135541351908 in words is "one hundred thirty-five billion, five hundred forty-one million, three hundred fifty-one thousand, nine hundred eight".