135608023691 has 8 divisors (see below), whose sum is σ = 154983966720. Its totient is φ = 116232922728.

The previous prime is 135608023679. The next prime is 135608023697. The reversal of 135608023691 is 196320806531.

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 135608023691 - 2⁶ = 135608023627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135608023697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183830 + ... + 552276.

It is an arithmetic number, because the mean of its divisors is an integer number (19372995840).

Almost surely, 2^135608023691 is an apocalyptic number.

135608023691 is a deficient number, since it is larger than the sum of its proper divisors (19375943029).

135608023691 is an equidigital number, since it uses as much as digits as its factorization.

135608023691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421033.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 135608023691 in words is "one hundred thirty-five billion, six hundred eight million, twenty-three thousand, six hundred ninety-one".