135115980 has 48 divisors (see below), whose sum is σ = 390534144. Its totient is φ = 34868160.

The previous prime is 135115979. The next prime is 135116029. The reversal of 135115980 is 89511531.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34462 + ... + 38181.

It is an arithmetic number, because the mean of its divisors is an integer number (8136128).

Almost surely, 2^135115980 is an apocalyptic number.

135115980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135115980 is an abundant number, since it is smaller than the sum of its proper divisors (255418164).

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

135115980 is a wasteful number, since it uses less digits than its factorization.

135115980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72686 (or 72684 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 33.

The square root of 135115980 is about 11623.9399516687. The cubic root of 135115980 is about 513.1396478871.

It can be divided in two parts, 13511 and 5980, that added together give a palindrome (19491).

The spelling of 135115980 in words is "one hundred thirty-five million, one hundred fifteen thousand, nine hundred eighty".