2001445464665 has 16 divisors (see below), whose sum is σ = 2420160906240. Its totient is φ = 1588883070720.

The previous prime is 2001445464631. The next prime is 2001445464731. The reversal of 2001445464665 is 5664645441002.

It is not a de Polignac number, because 2001445464665 - 2⁸ = 2001445464409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 785057 + ... + 2149233.

It is an arithmetic number, because the mean of its divisors is an integer number (151260056640).

Almost surely, 2^{2001445464665} is an apocalyptic number.

It is an amenable number.

2001445464665 is a deficient number, since it is larger than the sum of its proper divisors (418715441575).

2001445464665 is a wasteful number, since it uses less digits than its factorization.

2001445464665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366432.

The product of its (nonzero) digits is 2764800, while the sum is 47.

The spelling of 2001445464665 in words is "two trillion, one billion, four hundred forty-five million, four hundred sixty-four thousand, six hundred sixty-five".