20231436253465 has 8 divisors (see below), whose sum is σ = 24277751061768. Its totient is φ = 16185130631040.

The previous prime is 20231436253463. The next prime is 20231436253513. The reversal of 20231436253465 is 56435263413202.

It can be written as a sum of positive squares in 4 ways, for example, as 205694903296 + 20025741350169 = 453536^2 + 4475013^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20231436253465 - 2¹ = 20231436253463 is a prime.

It is a super-2 number, since 2×20231436253465² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20231436253463) 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 7 ways as a sum of consecutive naturals, for example, 4240575 + ... + 7644955.

It is an arithmetic number, because the mean of its divisors is an integer number (3034718882721).

Almost surely, 2^{20231436253465} is an apocalyptic number.

It is an amenable number.

20231436253465 is a deficient number, since it is larger than the sum of its proper divisors (4046314808303).

20231436253465 is a wasteful number, since it uses less digits than its factorization.

20231436253465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4592939.

The product of its (nonzero) digits is 3110400, while the sum is 46.

Adding to 20231436253465 its reverse (56435263413202), we get a palindrome (76666699666667).

The spelling of 20231436253465 in words is "twenty trillion, two hundred thirty-one billion, four hundred thirty-six million, two hundred fifty-three thousand, four hundred sixty-five".