135961181180 has 48 divisors (see below), whose sum is σ = 329796756576. Its totient is φ = 46532167680.

The previous prime is 135961181029. The next prime is 135961181189. The reversal of 135961181180 is 81181169531.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135961181189) 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, 18172889 + ... + 18180368.

It is an arithmetic number, because the mean of its divisors is an integer number (6870765762).

Almost surely, 2^135961181180 is an apocalyptic number.

135961181180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135961181180 is an abundant number, since it is smaller than the sum of its proper divisors (193835575396).

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

135961181180 is a wasteful number, since it uses less digits than its factorization.

135961181180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36353294 (or 36353292 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 44.

The spelling of 135961181180 in words is "one hundred thirty-five billion, nine hundred sixty-one million, one hundred eighty-one thousand, one hundred eighty".