3646066156544 has 88 divisors (see below), whose sum is σ = 8356934160960. Its totient is φ = 1557508939776.

The previous prime is 3646066156507. The next prime is 3646066156591. The reversal of 3646066156544 is 4456516606463.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a self number, because there is not a number n which added to its sum of digits gives 3646066156544.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1372142 + ... + 3029010.

It is an arithmetic number, because the mean of its divisors is an integer number (94965160920).

Almost surely, 2^{3646066156544} 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 3646066156544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4178467080480).

3646066156544 is an abundant number, since it is smaller than the sum of its proper divisors (4710868004416).

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

3646066156544 is a wasteful number, since it uses less digits than its factorization.

3646066156544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1657203 (or 1657185 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 56.

The spelling of 3646066156544 in words is "three trillion, six hundred forty-six billion, sixty-six million, one hundred fifty-six thousand, five hundred forty-four".