1235664204463 has 4 divisors (see below), whose sum is σ = 1330715297128. Its totient is φ = 1140613111800.

The previous prime is 1235664204443. The next prime is 1235664204479. The reversal of 1235664204463 is 3644024665321.

It is a happy number.

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 1235664204463 - 2²⁹ = 1235127333551 is a prime.

It is a super-3 number, since 3×1235664204463³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235664204433) 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, 47525546313 + ... + 47525546338.

It is an arithmetic number, because the mean of its divisors is an integer number (332678824282).

Almost surely, 2^{1235664204463} is an apocalyptic number.

1235664204463 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1235664204463 is a deficient number, since it is larger than the sum of its proper divisors (95051092665).

1235664204463 is an equidigital number, since it uses as much as digits as its factorization.

1235664204463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95051092664.

The product of its (nonzero) digits is 2488320, while the sum is 46.

Adding to 1235664204463 its reverse (3644024665321), we get a palindrome (4879688869784).

The spelling of 1235664204463 in words is "one trillion, two hundred thirty-five billion, six hundred sixty-four million, two hundred four thousand, four hundred sixty-three".