1671163081440 has 96 divisors (see below), whose sum is σ = 5265764380800. Its totient is φ = 445507981824.

The previous prime is 1671163081433. The next prime is 1671163081463. The reversal of 1671163081440 is 441803611761.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a junction number, because it is equal to n+sod(n) for n = 1671163081392 and 1671163081401.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 1055847 + ... + 2111193.

It is an arithmetic number, because the mean of its divisors is an integer number (54851712300).

Almost surely, 2^{1671163081440} is an apocalyptic number.

1671163081440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1671163081440 is an abundant number, since it is smaller than the sum of its proper divisors (3594601299360).

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

1671163081440 is a wasteful number, since it uses less digits than its factorization.

1671163081440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058664 (or 1058656 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The spelling of 1671163081440 in words is "one trillion, six hundred seventy-one billion, one hundred sixty-three million, eighty-one thousand, four hundred forty".