3640564002515 has 16 divisors (see below), whose sum is σ = 4765944254976. Its totient is φ = 2647619013600.

The previous prime is 3640564002503. The next prime is 3640564002529. The reversal of 3640564002515 is 5152004650463.

It is a happy number.

It is not a de Polignac number, because 3640564002515 - 2²⁸ = 3640295567059 is a prime.

It is a Duffinian number.

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, 1563974 + ... + 3118836.

It is an arithmetic number, because the mean of its divisors is an integer number (297871515936).

Almost surely, 2^{3640564002515} is an apocalyptic number.

3640564002515 is a deficient number, since it is larger than the sum of its proper divisors (1125380252461).

3640564002515 is a wasteful number, since it uses less digits than its factorization.

3640564002515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1597450.

The product of its (nonzero) digits is 432000, while the sum is 41.

Adding to 3640564002515 its reverse (5152004650463), we get a palindrome (8792568652978).

The spelling of 3640564002515 in words is "three trillion, six hundred forty billion, five hundred sixty-four million, two thousand, five hundred fifteen".