135888466681 has 8 divisors (see below), whose sum is σ = 148249813824. Its totient is φ = 123528427920.

The previous prime is 135888466673. The next prime is 135888466691. The reversal of 135888466681 is 186664888531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 135888466681 - 2³ = 135888466673 is a prime.

It is a super-2 number, since 2×135888466681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135888466661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 103266 + ... + 531451.

It is an arithmetic number, because the mean of its divisors is an integer number (18531226728).

Almost surely, 2^135888466681 is an apocalyptic number.

135888466681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

135888466681 is a deficient number, since it is larger than the sum of its proper divisors (12361347143).

135888466681 is a wasteful number, since it uses less digits than its factorization.

135888466681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654191.

The product of its digits is 53084160, while the sum is 64.

The spelling of 135888466681 in words is "one hundred thirty-five billion, eight hundred eighty-eight million, four hundred sixty-six thousand, six hundred eighty-one".