135123661346 has 8 divisors (see below), whose sum is σ = 206997949440. Its totient is φ = 66124344868.

The previous prime is 135123661319. The next prime is 135123661363. The reversal of 135123661346 is 643166321531.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718742786 + ... + 718742973.

It is an arithmetic number, because the mean of its divisors is an integer number (25874743680).

Almost surely, 2^135123661346 is an apocalyptic number.

135123661346 is a deficient number, since it is larger than the sum of its proper divisors (71874288094).

135123661346 is a wasteful number, since it uses less digits than its factorization.

135123661346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1437485808.

The product of its digits is 233280, while the sum is 41.

Adding to 135123661346 its reverse (643166321531), we get a palindrome (778289982877).

The spelling of 135123661346 in words is "one hundred thirty-five billion, one hundred twenty-three million, six hundred sixty-one thousand, three hundred forty-six".