135933456921 has 8 divisors (see below), whose sum is σ = 182548527840. Its totient is φ = 89970345312.

The previous prime is 135933456889. The next prime is 135933456973. The reversal of 135933456921 is 129654339531.

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

It is not a de Polignac number, because 135933456921 - 2⁵ = 135933456889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135933456121) 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, 162989340 + ... + 162990173.

It is an arithmetic number, because the mean of its divisors is an integer number (22818565980).

Almost surely, 2^135933456921 is an apocalyptic number.

It is an amenable number.

135933456921 is a deficient number, since it is larger than the sum of its proper divisors (46615070919).

135933456921 is a wasteful number, since it uses less digits than its factorization.

135933456921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325979655.

The product of its digits is 2624400, while the sum is 51.

The spelling of 135933456921 in words is "one hundred thirty-five billion, nine hundred thirty-three million, four hundred fifty-six thousand, nine hundred twenty-one".