135355102521 has 8 divisors (see below), whose sum is σ = 181050063840. Its totient is φ = 89948438112.

The previous prime is 135355102517. The next prime is 135355102559. The reversal of 135355102521 is 125201553531.

It is a happy number.

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

It is not a de Polignac number, because 135355102521 - 2² = 135355102517 is a prime.

It is not an unprimeable number, because it can be changed into a prime (135355102121) 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, 72073131 + ... + 72075008.

It is an arithmetic number, because the mean of its divisors is an integer number (22631257980).

Almost surely, 2^135355102521 is an apocalyptic number.

It is an amenable number.

135355102521 is a deficient number, since it is larger than the sum of its proper divisors (45694961319).

135355102521 is a wasteful number, since it uses less digits than its factorization.

135355102521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144148455.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 135355102521 in words is "one hundred thirty-five billion, three hundred fifty-five million, one hundred two thousand, five hundred twenty-one".