13261023465 has 32 divisors (see below), whose sum is σ = 21363004800. Its totient is φ = 7024258560.

The previous prime is 13261023437. The next prime is 13261023467. The reversal of 13261023465 is 56432016231.

13261023465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13261023465 - 2⁹ = 13261022953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13261023467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1330621 + ... + 1340549.

It is an arithmetic number, because the mean of its divisors is an integer number (667593900).

Almost surely, 2^13261023465 is an apocalyptic number.

13261023465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13261023465 is a deficient number, since it is larger than the sum of its proper divisors (8101981335).

13261023465 is a wasteful number, since it uses less digits than its factorization.

13261023465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10537.

The product of its (nonzero) digits is 25920, while the sum is 33.

Adding to 13261023465 its reverse (56432016231), we get a palindrome (69693039696).

The spelling of 13261023465 in words is "thirteen billion, two hundred sixty-one million, twenty-three thousand, four hundred sixty-five".