135720138650747 has 48 divisors (see below), whose sum is σ = 166081851752448. Its totient is φ = 108616607285760.

The previous prime is 135720138650731. The next prime is 135720138650771. The reversal of 135720138650747 is 747056831027531.

It is not a de Polignac number, because 135720138650747 - 2⁴ = 135720138650731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135720138659747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4516913078 + ... + 4516943124.

It is an arithmetic number, because the mean of its divisors is an integer number (3460038578176).

Almost surely, 2^{135720138650747} is an apocalyptic number.

135720138650747 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

135720138650747 is a deficient number, since it is larger than the sum of its proper divisors (30361713101701).

135720138650747 is a wasteful number, since it uses less digits than its factorization.

135720138650747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47796 (or 47779 counting only the distinct ones).

The product of its (nonzero) digits is 29635200, while the sum is 59.

The spelling of 135720138650747 in words is "one hundred thirty-five trillion, seven hundred twenty billion, one hundred thirty-eight million, six hundred fifty thousand, seven hundred forty-seven".