123535358953 has 4 divisors (see below), whose sum is σ = 124668710980. Its totient is φ = 122402006928.

The previous prime is 123535358899. The next prime is 123535358963. The reversal of 123535358953 is 359853535321.

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

It can be written as a sum of positive squares in 2 ways, for example, as 95943823504 + 27591535449 = 309748^2 + 166107^2 .

It is not a de Polignac number, because 123535358953 - 2²¹ = 123533261801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123535358953.

It is not an unprimeable number, because it can be changed into a prime (123535358963) by changing a digit.

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, 566675850 + ... + 566676067.

It is an arithmetic number, because the mean of its divisors is an integer number (31167177745).

Almost surely, 2^123535358953 is an apocalyptic number.

It is an amenable number.

123535358953 is a deficient number, since it is larger than the sum of its proper divisors (1133352027).

123535358953 is a wasteful number, since it uses less digits than its factorization.

123535358953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133352026.

The product of its digits is 7290000, while the sum is 52.

The spelling of 123535358953 in words is "one hundred twenty-three billion, five hundred thirty-five million, three hundred fifty-eight thousand, nine hundred fifty-three".