135171226494 has 20 divisors (see below), whose sum is σ = 302883674544. Its totient is φ = 45057075444.

The previous prime is 135171226493. The next prime is 135171226499. The reversal of 135171226494 is 494622171531.

135171226494 is a `hidden beast` number, since 1 + 3 + 517 + 122 + 6 + 4 + 9 + 4 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135171226493) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 417194982 + ... + 417195305.

Almost surely, 2^135171226494 is an apocalyptic number.

135171226494 is an abundant number, since it is smaller than the sum of its proper divisors (167712448050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135171226494 is an equidigital number, since it uses as much as digits as its factorization.

135171226494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 834390301 (or 834390292 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 135171226494 in words is "one hundred thirty-five billion, one hundred seventy-one million, two hundred twenty-six thousand, four hundred ninety-four".