235415205405 has 12 divisors (see below), whose sum is σ = 408053022780. Its totient is φ = 125554776192.

The previous prime is 235415205397. The next prime is 235415205407. The reversal of 235415205405 is 504502514532.

235415205405 is a `hidden beast` number, since 2 + 3 + 5 + 41 + 5 + 205 + 405 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 179861658201 + 55553547204 = 424101^2 + 235698^2 .

It is not a de Polignac number, because 235415205405 - 2³ = 235415205397 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 235415205405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (235415205407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2615724460 + ... + 2615724549.

It is an arithmetic number, because the mean of its divisors is an integer number (34004418565).

Almost surely, 2^235415205405 is an apocalyptic number.

It is an amenable number.

235415205405 is a deficient number, since it is larger than the sum of its proper divisors (172637817375).

235415205405 is a wasteful number, since it uses less digits than its factorization.

235415205405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5231449020 (or 5231449017 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 235415205405 its reverse (504502514532), we get a palindrome (739917719937).

The spelling of 235415205405 in words is "two hundred thirty-five billion, four hundred fifteen million, two hundred five thousand, four hundred five".