3665148252668 has 72 divisors (see below), whose sum is σ = 7648677856512. Its totient is φ = 1531441338336.

The previous prime is 3665148252581. The next prime is 3665148252673. The reversal of 3665148252668 is 8662528415663.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3665148252668.

It is a congruent number.

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, 4212605 + ... + 5007627.

It is an arithmetic number, because the mean of its divisors is an integer number (106231636896).

Almost surely, 2^{3665148252668} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3665148252668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3824338928256).

3665148252668 is an abundant number, since it is smaller than the sum of its proper divisors (3983529603844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3665148252668 is a wasteful number, since it uses less digits than its factorization.

3665148252668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795631 (or 795622 counting only the distinct ones).

The product of its digits is 99532800, while the sum is 62.

The spelling of 3665148252668 in words is "three trillion, six hundred sixty-five billion, one hundred forty-eight million, two hundred fifty-two thousand, six hundred sixty-eight".