135158745420 has 192 divisors, whose sum is σ = 444198720000. Its totient is φ = 34023981312.

The previous prime is 135158745419. The next prime is 135158745427. The reversal of 135158745420 is 24547851531.

135158745420 is a `hidden beast` number, since 1 + 3 + 5 + 1 + 587 + 45 + 4 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (135158745427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2880306 + ... + 2926854.

It is an arithmetic number, because the mean of its divisors is an integer number (2313535000).

Almost surely, 2^135158745420 is an apocalyptic number.

135158745420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135158745420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (222099360000).

135158745420 is an abundant number, since it is smaller than the sum of its proper divisors (309039974580).

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

135158745420 is a wasteful number, since it uses less digits than its factorization.

135158745420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46869 (or 46861 counting only the distinct ones).

The product of its (nonzero) digits is 672000, while the sum is 45.

The spelling of 135158745420 in words is "one hundred thirty-five billion, one hundred fifty-eight million, seven hundred forty-five thousand, four hundred twenty".