135471247440 has 120 divisors (see below), whose sum is σ = 433945734624. Its totient is φ = 34960262400.

The previous prime is 135471247411. The next prime is 135471247459. The reversal of 135471247440 is 44742174531.

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 135471247392 and 135471247401.

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, 63046 + ... + 524325.

Almost surely, 2^135471247440 is an apocalyptic number.

135471247440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 135471247440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216972867312).

135471247440 is an abundant number, since it is smaller than the sum of its proper divisors (298474487184).

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

135471247440 is a wasteful number, since it uses less digits than its factorization.

135471247440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587449 (or 587412 counting only the distinct ones).

The product of its (nonzero) digits is 376320, while the sum is 42.

The spelling of 135471247440 in words is "one hundred thirty-five billion, four hundred seventy-one million, two hundred forty-seven thousand, four hundred forty".