13640413465 has 48 divisors (see below), whose sum is σ = 20554145280. Its totient is φ = 8638143360.

The previous prime is 13640413463. The next prime is 13640413489. The reversal of 13640413465 is 56431404631.

It is not a de Polignac number, because 13640413465 - 2¹ = 13640413463 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13640413463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121680 + ... + 205150.

It is an arithmetic number, because the mean of its divisors is an integer number (428211360).

Almost surely, 2^13640413465 is an apocalyptic number.

It is an amenable number.

13640413465 is a deficient number, since it is larger than the sum of its proper divisors (6913731815).

13640413465 is a wasteful number, since it uses less digits than its factorization.

13640413465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83542 (or 83535 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 37.

The spelling of 13640413465 in words is "thirteen billion, six hundred forty million, four hundred thirteen thousand, four hundred sixty-five".