135156775440 has 80 divisors (see below), whose sum is σ = 419245684416. Its totient is φ = 36019468800.

The previous prime is 135156775339. The next prime is 135156775471. The reversal of 135156775440 is 44577651531.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 135156775440.

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, 215335 + ... + 562745.

Almost surely, 2^135156775440 is an apocalyptic number.

135156775440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135156775440 is an abundant number, since it is smaller than the sum of its proper divisors (284088908976).

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

135156775440 is a wasteful number, since it uses less digits than its factorization.

135156775440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349048 (or 349042 counting only the distinct ones).

The product of its (nonzero) digits is 1764000, while the sum is 48.

The spelling of 135156775440 in words is "one hundred thirty-five billion, one hundred fifty-six million, seven hundred seventy-five thousand, four hundred forty".