135423877980 has 48 divisors (see below), whose sum is σ = 379240654464. Its totient is φ = 36107910720.

The previous prime is 135423877969. The next prime is 135423877987. The reversal of 135423877980 is 89778324531.

It is a self number, because there is not a number n which added to its sum of digits gives 135423877980.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135423877987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 276159 + ... + 589161.

It is an arithmetic number, because the mean of its divisors is an integer number (7900846968).

Almost surely, 2^135423877980 is an apocalyptic number.

135423877980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135423877980 is an abundant number, since it is smaller than the sum of its proper divisors (243816776484).

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

135423877980 is a wasteful number, since it uses less digits than its factorization.

135423877980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320226 (or 320224 counting only the distinct ones).

The product of its (nonzero) digits is 10160640, while the sum is 57.

The spelling of 135423877980 in words is "one hundred thirty-five billion, four hundred twenty-three million, eight hundred seventy-seven thousand, nine hundred eighty".