135440131550 has 48 divisors (see below), whose sum is σ = 257338529280. Its totient is φ = 53018732640.

The previous prime is 135440131549. The next prime is 135440131573. The reversal of 135440131550 is 55131044531.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 554909 + ... + 760791.

It is an arithmetic number, because the mean of its divisors is an integer number (5361219360).

Almost surely, 2^135440131550 is an apocalyptic number.

135440131550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

135440131550 is a deficient number, since it is larger than the sum of its proper divisors (121898397730).

135440131550 is a wasteful number, since it uses less digits than its factorization.

135440131550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206177 (or 206172 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

The spelling of 135440131550 in words is "one hundred thirty-five billion, four hundred forty million, one hundred thirty-one thousand, five hundred fifty".