3643240021465 has 24 divisors (see below), whose sum is σ = 4805588430720. Its totient is φ = 2649560332320.

The previous prime is 3643240021417. The next prime is 3643240021517. The reversal of 3643240021465 is 5641200423463.

It is not a de Polignac number, because 3643240021465 - 2¹¹ = 3643240019417 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41628082 + ... + 41715508.

It is an arithmetic number, because the mean of its divisors is an integer number (200232851280).

Almost surely, 2^{3643240021465} is an apocalyptic number.

It is an amenable number.

3643240021465 is a deficient number, since it is larger than the sum of its proper divisors (1162348409255).

3643240021465 is a wasteful number, since it uses less digits than its factorization.

3643240021465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156333 (or 156322 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 40.

The spelling of 3643240021465 in words is "three trillion, six hundred forty-three billion, two hundred forty million, twenty-one thousand, four hundred sixty-five".