13945664587465 has 16 divisors (see below), whose sum is σ = 18023931874368. Its totient is φ = 10297284209856.

The previous prime is 13945664587457. The next prime is 13945664587513. The reversal of 13945664587465 is 56478546654931.

It is a cyclic number.

It is not a de Polignac number, because 13945664587465 - 2³ = 13945664587457 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10324747 + ... + 11597056.

It is an arithmetic number, because the mean of its divisors is an integer number (1126495742148).

Almost surely, 2^{13945664587465} is an apocalyptic number.

It is an amenable number.

13945664587465 is a deficient number, since it is larger than the sum of its proper divisors (4078267286903).

13945664587465 is a wasteful number, since it uses less digits than its factorization.

13945664587465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21931608.

The product of its digits is 2612736000, while the sum is 73.

The spelling of 13945664587465 in words is "thirteen trillion, nine hundred forty-five billion, six hundred sixty-four million, five hundred eighty-seven thousand, four hundred sixty-five".