135751040728 has 16 divisors (see below), whose sum is σ = 256868370000. Its totient is φ = 67252808736.

The previous prime is 135751040693. The next prime is 135751040743. The reversal of 135751040728 is 827040157531.

It is a super-2 number, since 2×135751040728² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 77838028 + ... + 77839771.

It is an arithmetic number, because the mean of its divisors is an integer number (16054273125).

Almost surely, 2^135751040728 is an apocalyptic number.

It is an amenable number.

135751040728 is a deficient number, since it is larger than the sum of its proper divisors (121117329272).

135751040728 is a wasteful number, since it uses less digits than its factorization.

135751040728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155677914 (or 155677910 counting only the distinct ones).

The product of its (nonzero) digits is 235200, while the sum is 43.

The spelling of 135751040728 in words is "one hundred thirty-five billion, seven hundred fifty-one million, forty thousand, seven hundred twenty-eight".