135334752921 has 24 divisors (see below), whose sum is σ = 202126579200. Its totient is φ = 87166872000.

The previous prime is 135334752911. The next prime is 135334752941. The reversal of 135334752921 is 129257433531.

135334752921 is a `hidden beast` number, since 1 + 3 + 533 + 4 + 75 + 29 + 21 = 666.

It is not a de Polignac number, because 135334752921 - 2⁷ = 135334752793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135334752911) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 237780 + ... + 572021.

It is an arithmetic number, because the mean of its divisors is an integer number (8421940800).

Almost surely, 2^135334752921 is an apocalyptic number.

It is an amenable number.

135334752921 is a deficient number, since it is larger than the sum of its proper divisors (66791826279).

135334752921 is a wasteful number, since it uses less digits than its factorization.

135334752921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 810437 (or 810434 counting only the distinct ones).

The product of its digits is 680400, while the sum is 45.

The spelling of 135334752921 in words is "one hundred thirty-five billion, three hundred thirty-four million, seven hundred fifty-two thousand, nine hundred twenty-one".