135943642658 has 8 divisors (see below), whose sum is σ = 203919523500. Its totient is φ = 67970468160.

The previous prime is 135943642633. The next prime is 135943642711. The reversal of 135943642658 is 856246349531.

It can be written as a sum of positive squares in 2 ways, for example, as 135922730329 + 20912329 = 368677^2 + 4573^2 .

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

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, 545963 + ... + 754958.

Almost surely, 2^135943642658 is an apocalyptic number.

135943642658 is a deficient number, since it is larger than the sum of its proper divisors (67975880842).

135943642658 is a wasteful number, since it uses less digits than its factorization.

135943642658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1353172.

The product of its digits is 18662400, while the sum is 56.

The spelling of 135943642658 in words is "one hundred thirty-five billion, nine hundred forty-three million, six hundred forty-two thousand, six hundred fifty-eight".