135556253040 has 80 divisors (see below), whose sum is σ = 452549347488. Its totient is φ = 33367692288.

The previous prime is 135556252973. The next prime is 135556253051. The reversal of 135556253040 is 40352655531.

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 (39).

It is a self number, because there is not a number n which added to its sum of digits gives 135556253040.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21720639 + ... + 21726878.

Almost surely, 2^135556253040 is an apocalyptic number.

135556253040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135556253040 is an abundant number, since it is smaller than the sum of its proper divisors (316993094448).

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

135556253040 is a wasteful number, since it uses less digits than its factorization.

135556253040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43447546 (or 43447540 counting only the distinct ones).

The product of its (nonzero) digits is 270000, while the sum is 39.

The spelling of 135556253040 in words is "one hundred thirty-five billion, five hundred fifty-six million, two hundred fifty-three thousand, forty".