13400305245 has 24 divisors (see below), whose sum is σ = 23264889336. Its totient is φ = 7135231488.

The previous prime is 13400305211. The next prime is 13400305249. The reversal of 13400305245 is 54250300431.

13400305245 is a `hidden beast` number, since 13 + 400 + 3 + 0 + 5 + 245 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 850480569 + 12549824676 = 29163^2 + 112026^2 .

It is not a de Polignac number, because 13400305245 - 2⁸ = 13400304989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13400305249) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 213552 + ... + 269081.

It is an arithmetic number, because the mean of its divisors is an integer number (969370389).

Almost surely, 2^13400305245 is an apocalyptic number.

13400305245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13400305245 is a deficient number, since it is larger than the sum of its proper divisors (9864584091).

13400305245 is a wasteful number, since it uses less digits than its factorization.

13400305245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 483261 (or 483258 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 13400305245 its reverse (54250300431), we get a palindrome (67650605676).

The spelling of 13400305245 in words is "thirteen billion, four hundred million, three hundred five thousand, two hundred forty-five".