13265411280 has 80 divisors (see below), whose sum is σ = 44861217984. Its totient is φ = 3215856640.

The previous prime is 13265411251. The next prime is 13265411281. The reversal of 13265411280 is 8211456231.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×13265411280² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13265411281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2509749 + ... + 2515028.

Almost surely, 2^13265411280 is an apocalyptic number.

13265411280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13265411280 is an abundant number, since it is smaller than the sum of its proper divisors (31595806704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13265411280 is a wasteful number, since it uses less digits than its factorization.

13265411280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5024804 (or 5024798 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 13265411280 in words is "thirteen billion, two hundred sixty-five million, four hundred eleven thousand, two hundred eighty".