1373805881433 has 24 divisors (see below), whose sum is σ = 2088890161280. Its totient is φ = 867640908960.

The previous prime is 1373805881369. The next prime is 1373805881453. The reversal of 1373805881433 is 3341885083731.

It is a happy number.

1373805881433 is a `hidden beast` number, since 1 + 3 + 7 + 3 + 80 + 58 + 81 + 433 = 666.

It is not a de Polignac number, because 1373805881433 - 2⁶ = 1373805881369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1373805881433.

It is not an unprimeable number, because it can be changed into a prime (1373805881453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6758835 + ... + 6959127.

Almost surely, 2^{1373805881433} is an apocalyptic number.

It is an amenable number.

1373805881433 is a deficient number, since it is larger than the sum of its proper divisors (715084279847).

1373805881433 is a wasteful number, since it uses less digits than its factorization.

1373805881433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240429 (or 240426 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 54.

The spelling of 1373805881433 in words is "one trillion, three hundred seventy-three billion, eight hundred five million, eight hundred eighty-one thousand, four hundred thirty-three".