135421515542340 has 72 divisors (see below), whose sum is σ = 410782918710528. Its totient is φ = 36112024226880.

The previous prime is 135421515542317. The next prime is 135421515542431. The reversal of 135421515542340 is 43245515124531.

135421515542340 is a `hidden beast` number, since 1 + 3 + 5 + 4 + 2 + 1 + 51 + 554 + 2 + 3 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13410775 + ... + 21229505.

It is an arithmetic number, because the mean of its divisors is an integer number (5705318315424).

Almost surely, 2^{135421515542340} is an apocalyptic number.

135421515542340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

135421515542340 is an abundant number, since it is smaller than the sum of its proper divisors (275361403168188).

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

135421515542340 is a wasteful number, since it uses less digits than its factorization.

135421515542340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7914969 (or 7914964 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 45.

The spelling of 135421515542340 in words is "one hundred thirty-five trillion, four hundred twenty-one billion, five hundred fifteen million, five hundred forty-two thousand, three hundred forty".