3645257616000 has 3840 divisors, whose sum is σ = 18655928928000. Its totient is φ = 662390784000.

The previous prime is 3645257615983. The next prime is 3645257616037. The reversal of 3645257616000 is 6167525463.

3645257616000 is a `hidden beast` number, since 3 + 6 + 4 + 5 + 25 + 7 + 616 + 0 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 479 ways as a sum of consecutive naturals, for example, 191855663991 + ... + 191855664009.

It is an arithmetic number, because the mean of its divisors is an integer number (4858314825).

Almost surely, 2^{3645257616000} is an apocalyptic number.

3645257616000 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3645257616000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9327964464000).

3645257616000 is an abundant number, since it is smaller than the sum of its proper divisors (15010671312000).

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

3645257616000 is a wasteful number, since it uses less digits than its factorization.

3645257616000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118 (or 60 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 45.

The spelling of 3645257616000 in words is "three trillion, six hundred forty-five billion, two hundred fifty-seven million, six hundred sixteen thousand".