395135739123 has 4 divisors (see below), whose sum is σ = 526847652168. Its totient is φ = 263423826080.

The previous prime is 395135739109. The next prime is 395135739151. The reversal of 395135739123 is 321937531593.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 395135739123 - 2¹⁶ = 395135673587 is a prime.

It is a super-2 number, since 2×395135739123² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (395135749123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65855956518 + ... + 65855956523.

It is an arithmetic number, because the mean of its divisors is an integer number (131711913042).

Almost surely, 2^395135739123 is an apocalyptic number.

395135739123 is a deficient number, since it is larger than the sum of its proper divisors (131711913045).

395135739123 is a wasteful number, since it uses less digits than its factorization.

395135739123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131711913044.

The product of its digits is 2296350, while the sum is 51.

The spelling of 395135739123 in words is "three hundred ninety-five billion, one hundred thirty-five million, seven hundred thirty-nine thousand, one hundred twenty-three".