235355657823 has 36 divisors (see below), whose sum is σ = 399420955752. Its totient is φ = 131657764320.

The previous prime is 235355657821. The next prime is 235355657827. The reversal of 235355657823 is 328756553532.

235355657823 is a `hidden beast` number, since 2 + 3 + 5 + 3 + 5 + 565 + 78 + 2 + 3 = 666.

It is not a de Polignac number, because 235355657823 - 2¹ = 235355657821 is a prime.

It is a super-2 number, since 2×235355657823² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 235355657823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235355657821) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 17397340 + ... + 17410862.

Almost surely, 2^235355657823 is an apocalyptic number.

235355657823 is a deficient number, since it is larger than the sum of its proper divisors (164065297929).

235355657823 is an equidigital number, since it uses as much as digits as its factorization.

235355657823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27076 (or 13550 counting only the distinct ones).

The product of its digits is 22680000, while the sum is 54.

The spelling of 235355657823 in words is "two hundred thirty-five billion, three hundred fifty-five million, six hundred fifty-seven thousand, eight hundred twenty-three".