3645215145752 has 8 divisors (see below), whose sum is σ = 6834778398300. Its totient is φ = 1822607572872.

The previous prime is 3645215145749. The next prime is 3645215145779. The reversal of 3645215145752 is 2575415125463.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 3645215145752.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227825946602 + ... + 227825946617.

Almost surely, 2^{3645215145752} is an apocalyptic number.

It is an amenable number.

3645215145752 is a deficient number, since it is larger than the sum of its proper divisors (3189563252548).

3645215145752 is a wasteful number, since it uses less digits than its factorization.

3645215145752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455651893225 (or 455651893221 counting only the distinct ones).

The product of its digits is 5040000, while the sum is 50.

The spelling of 3645215145752 in words is "three trillion, six hundred forty-five billion, two hundred fifteen million, one hundred forty-five thousand, seven hundred fifty-two".