1640054208000 has 640 divisors, whose sum is σ = 5953316713344. Its totient is φ = 398131200000.

The previous prime is 1640054207983. The next prime is 1640054208083. The reversal of 1640054208000 is 8024500461.

It is a tau number, because it is divible by the number of its divisors (640).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 182203500 + ... + 182212500.

Almost surely, 2^{1640054208000} is an apocalyptic number.

1640054208000 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 1640054208000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2976658356672).

1640054208000 is an abundant number, since it is smaller than the sum of its proper divisors (4313262505344).

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

1640054208000 is an equidigital number, since it uses as much as digits as its factorization.

1640054208000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9123 (or 9097 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 1640054208000 its reverse (8024500461), we get a palindrome (1648078708461).

The spelling of 1640054208000 in words is "one trillion, six hundred forty billion, fifty-four million, two hundred eight thousand".