135803839634 has 4 divisors (see below), whose sum is σ = 203705759454. Its totient is φ = 67901919816.

The previous prime is 135803839631. The next prime is 135803839649. The reversal of 135803839634 is 436938308531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 436938308531 = 17 ⋅25702253443.

It can be written as a sum of positive squares in only one way, i.e., 107979931609 + 27823908025 = 328603^2 + 166805^2 .

It is not an unprimeable number, because it can be changed into a prime (135803839631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33950959907 + ... + 33950959910.

Almost surely, 2^135803839634 is an apocalyptic number.

135803839634 is a deficient number, since it is larger than the sum of its proper divisors (67901919820).

135803839634 is an equidigital number, since it uses as much as digits as its factorization.

135803839634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67901919819.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 135803839634 in words is "one hundred thirty-five billion, eight hundred three million, eight hundred thirty-nine thousand, six hundred thirty-four".