135939302673 has 16 divisors (see below), whose sum is σ = 191921760576. Its totient is φ = 85291937280.

The previous prime is 135939302657. The next prime is 135939302677. The reversal of 135939302673 is 376203939531.

It is a happy number.

It is not a de Polignac number, because 135939302673 - 2⁴ = 135939302657 is a prime.

It is a super-2 number, since 2×135939302673² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (135939302677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2436378 + ... + 2491548.

It is an arithmetic number, because the mean of its divisors is an integer number (11995110036).

Almost surely, 2^135939302673 is an apocalyptic number.

It is an amenable number.

135939302673 is a deficient number, since it is larger than the sum of its proper divisors (55982457903).

135939302673 is a wasteful number, since it uses less digits than its factorization.

135939302673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103504.

The product of its (nonzero) digits is 2755620, while the sum is 51.

The spelling of 135939302673 in words is "one hundred thirty-five billion, nine hundred thirty-nine million, three hundred two thousand, six hundred seventy-three".