135534421723999 has 8 divisors (see below), whose sum is σ = 143687756597888. Its totient is φ = 127617415397280.

The previous prime is 135534421723963. The next prime is 135534421724027. The reversal of 135534421723999 is 999327124435531.

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 135534421723999 - 2²¹ = 135534419626847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135534421723699) 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, 59082135612 + ... + 59082137905.

It is an arithmetic number, because the mean of its divisors is an integer number (17960969574736).

Almost surely, 2^{135534421723999} is an apocalyptic number.

135534421723999 is a deficient number, since it is larger than the sum of its proper divisors (8153334873889).

135534421723999 is a wasteful number, since it uses less digits than its factorization.

135534421723999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118164273585.

The product of its digits is 220449600, while the sum is 67.

The spelling of 135534421723999 in words is "one hundred thirty-five trillion, five hundred thirty-four billion, four hundred twenty-one million, seven hundred twenty-three thousand, nine hundred ninety-nine".