13261659411 has 64 divisors (see below), whose sum is σ = 23938016256. Its totient is φ = 6359063040.

The previous prime is 13261659403. The next prime is 13261659503. The reversal of 13261659411 is 11495616231.

It is not a de Polignac number, because 13261659411 - 2³ = 13261659403 is a prime.

It is a super-2 number, since 2×13261659411² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 13261659411.

It is not an unprimeable number, because it can be changed into a prime (13261659511) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 345115 + ... + 381611.

It is an arithmetic number, because the mean of its divisors is an integer number (374031504).

Almost surely, 2^13261659411 is an apocalyptic number.

13261659411 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

13261659411 is a deficient number, since it is larger than the sum of its proper divisors (10676356845).

13261659411 is a wasteful number, since it uses less digits than its factorization.

13261659411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36553 (or 36531 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The spelling of 13261659411 in words is "thirteen billion, two hundred sixty-one million, six hundred fifty-nine thousand, four hundred eleven".