135478444549 has 8 divisors (see below), whose sum is σ = 154834849728. Its totient is φ = 116122624800.

The previous prime is 135478444537. The next prime is 135478444567. The reversal of 135478444549 is 945444874531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135478444549 - 2¹⁹ = 135477920261 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135478444493 and 135478444502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135478444249) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 610449 + ... + 802249.

It is an arithmetic number, because the mean of its divisors is an integer number (19354356216).

Almost surely, 2^135478444549 is an apocalyptic number.

It is an amenable number.

135478444549 is a deficient number, since it is larger than the sum of its proper divisors (19356405179).

135478444549 is a wasteful number, since it uses less digits than its factorization.

135478444549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292715.

The product of its digits is 38707200, while the sum is 58.

The spelling of 135478444549 in words is "one hundred thirty-five billion, four hundred seventy-eight million, four hundred forty-four thousand, five hundred forty-nine".