1671531448320 has 768 divisors, whose sum is σ = 6082903008000. Its totient is φ = 440731238400.

The previous prime is 1671531448319. The next prime is 1671531448373. The reversal of 1671531448320 is 238441351761.

1671531448320 is a `hidden beast` number, since 1 + 6 + 7 + 1 + 5 + 314 + 4 + 8 + 320 = 666.

It is a tau number, because it is divible by the number of its divisors (768).

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 63 ways as a sum of consecutive naturals, for example, 2261882511 + ... + 2261883249.

It is an arithmetic number, because the mean of its divisors is an integer number (7920446625).

Almost surely, 2^{1671531448320} is an apocalyptic number.

1671531448320 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 1671531448320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3041451504000).

1671531448320 is an abundant number, since it is smaller than the sum of its proper divisors (4411371559680).

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

1671531448320 is an frugal number, since it uses more digits than its factorization.

1671531448320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 888 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 1671531448320 in words is "one trillion, six hundred seventy-one billion, five hundred thirty-one million, four hundred forty-eight thousand, three hundred twenty".