13261101623 has 48 divisors (see below), whose sum is σ = 18146903040. Its totient is φ = 9550396800.

The previous prime is 13261101589. The next prime is 13261101631. The reversal of 13261101623 is 32610116231.

It is not a de Polignac number, because 13261101623 - 2³⁰ = 12187359799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13261101592 and 13261101601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13261101673) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 404090 + ... + 435672.

It is an arithmetic number, because the mean of its divisors is an integer number (378060480).

Almost surely, 2^13261101623 is an apocalyptic number.

13261101623 is a deficient number, since it is larger than the sum of its proper divisors (4885801417).

13261101623 is a wasteful number, since it uses less digits than its factorization.

13261101623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31668 (or 31661 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 13261101623 its reverse (32610116231), we get a palindrome (45871217854).

The spelling of 13261101623 in words is "thirteen billion, two hundred sixty-one million, one hundred one thousand, six hundred twenty-three".