1673988040640 has 56 divisors (see below), whose sum is σ = 4010639263440. Its totient is φ = 665487249408.

The previous prime is 1673988040609. The next prime is 1673988040651. The reversal of 1673988040640 is 460408893761.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15994505 + ... + 16098824.

Almost surely, 2^{1673988040640} is an apocalyptic number.

1673988040640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1673988040640 is an abundant number, since it is smaller than the sum of its proper divisors (2336651222800).

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

1673988040640 is a wasteful number, since it uses less digits than its factorization.

1673988040640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32093509 (or 32093499 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 56.

The spelling of 1673988040640 in words is "one trillion, six hundred seventy-three billion, nine hundred eighty-eight million, forty thousand, six hundred forty".