13465551312 has 60 divisors (see below), whose sum is σ = 38030618340. Its totient is φ = 4447332864.

The previous prime is 13465551289. The next prime is 13465551331. The reversal of 13465551312 is 21315556431.

13465551312 is a `hidden beast` number, since 1 + 34 + 65 + 551 + 3 + 12 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4048013376 + 9417537936 = 63624^2 + 97044^2 .

It is a super-2 number, since 2×13465551312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 413253 + ... + 444644.

It is an arithmetic number, because the mean of its divisors is an integer number (633843639).

Almost surely, 2^13465551312 is an apocalyptic number.

13465551312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13465551312 is an abundant number, since it is smaller than the sum of its proper divisors (24565067028).

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

13465551312 is a wasteful number, since it uses less digits than its factorization.

13465551312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858020 (or 858011 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The spelling of 13465551312 in words is "thirteen billion, four hundred sixty-five million, five hundred fifty-one thousand, three hundred twelve".