20385339135 has 32 divisors (see below), whose sum is σ = 38478508032. Its totient is φ = 9018397440.

The previous prime is 20385339109. The next prime is 20385339137. The reversal of 20385339135 is 53193358302.

It is a happy number.

It is not a de Polignac number, because 20385339135 - 2⁶ = 20385339071 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20385339137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3128134 + ... + 3134643.

It is an arithmetic number, because the mean of its divisors is an integer number (1202453376).

Almost surely, 2^20385339135 is an apocalyptic number.

20385339135 is a deficient number, since it is larger than the sum of its proper divisors (18093168897).

20385339135 is a wasteful number, since it uses less digits than its factorization.

20385339135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6262823.

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 20385339135 in words is "twenty billion, three hundred eighty-five million, three hundred thirty-nine thousand, one hundred thirty-five".