1641314448000 has 1024 divisors, whose sum is σ = 6218664192000. Its totient is φ = 425292595200.

The previous prime is 1641314447977. The next prime is 1641314448013. The reversal of 1641314448000 is 8444131461.

It is a happy number.

1641314448000 is a `hidden beast` number, since 1 + 6 + 4 + 131 + 44 + 480 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4649615824 + ... + 4649616176.

It is an arithmetic number, because the mean of its divisors is an integer number (6072914250).

Almost surely, 2^{1641314448000} is an apocalyptic number.

1641314448000 is a gapful number since it is divisible by the number (10) 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 1641314448000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3109332096000).

1641314448000 is an abundant number, since it is smaller than the sum of its proper divisors (4577349744000).

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

1641314448000 is a wasteful number, since it uses less digits than its factorization.

1641314448000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667 (or 639 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

Adding to 1641314448000 its reverse (8444131461), we get a palindrome (1649758579461).

The spelling of 1641314448000 in words is "one trillion, six hundred forty-one billion, three hundred fourteen million, four hundred forty-eight thousand".