12865445001 has 16 divisors (see below), whose sum is σ = 19062041920. Its totient is φ = 8576007840.

The previous prime is 12865444997. The next prime is 12865445023. The reversal of 12865445001 is 10054456821.

It is a happy number.

It is not a de Polignac number, because 12865445001 - 2² = 12865444997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12865445051) 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, 288141 + ... + 329781.

It is an arithmetic number, because the mean of its divisors is an integer number (1191377620).

Almost surely, 2^12865445001 is an apocalyptic number.

It is an amenable number.

12865445001 is a deficient number, since it is larger than the sum of its proper divisors (6196596919).

12865445001 is a wasteful number, since it uses less digits than its factorization.

12865445001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53093 (or 53087 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 12865445001 in words is "twelve billion, eight hundred sixty-five million, four hundred forty-five thousand, one".