13266155101 has 4 divisors (see below), whose sum is σ = 13266387100. Its totient is φ = 13265923104.

The previous prime is 13266155099. The next prime is 13266155107. The reversal of 13266155101 is 10155166231.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 10155166231 = 7 ⋅1450738033.

It can be written as a sum of positive squares in 2 ways, for example, as 11525096025 + 1741059076 = 107355^2 + 41726^2 .

It is a cyclic number.

It is not a de Polignac number, because 13266155101 - 2¹ = 13266155099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13266155107) 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, 37345 + ... + 167113.

It is an arithmetic number, because the mean of its divisors is an integer number (3316596775).

Almost surely, 2^13266155101 is an apocalyptic number.

It is an amenable number.

13266155101 is a deficient number, since it is larger than the sum of its proper divisors (231999).

13266155101 is a wasteful number, since it uses less digits than its factorization.

13266155101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231998.

The product of its (nonzero) digits is 5400, while the sum is 31.

It can be divided in two parts, 1326615 and 5101, that added together give a square (1331716 = 1154²).

The spelling of 13266155101 in words is "thirteen billion, two hundred sixty-six million, one hundred fifty-five thousand, one hundred one".