135136131880 has 64 divisors (see below), whose sum is σ = 305417407680. Its totient is φ = 53812915200.

The previous prime is 135136131833. The next prime is 135136131883. The reversal of 135136131880 is 88131631531.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (135136131883) 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, 10812435 + ... + 10824925.

It is an arithmetic number, because the mean of its divisors is an integer number (4772146995).

Almost surely, 2^135136131880 is an apocalyptic number.

135136131880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135136131880 is an abundant number, since it is smaller than the sum of its proper divisors (170281275800).

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

135136131880 is a wasteful number, since it uses less digits than its factorization.

135136131880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13690 (or 13686 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The spelling of 135136131880 in words is "one hundred thirty-five billion, one hundred thirty-six million, one hundred thirty-one thousand, eight hundred eighty".