8001435729373 has 4 divisors (see below), whose sum is σ = 8001956637628. Its totient is φ = 8000914821120.

The previous prime is 8001435729359. The next prime is 8001435729401. The reversal of 8001435729373 is 3739275341008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3321426060484 + 4680009668889 = 1822478^2 + 2163333^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8001435729373 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 8001435729373.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001435729323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 260431086 + ... + 260461807.

It is an arithmetic number, because the mean of its divisors is an integer number (2000489159407).

Almost surely, 2^{8001435729373} is an apocalyptic number.

It is an amenable number.

8001435729373 is a deficient number, since it is larger than the sum of its proper divisors (520908255).

8001435729373 is a wasteful number, since it uses less digits than its factorization.

8001435729373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520908254.

The product of its (nonzero) digits is 3810240, while the sum is 52.

The spelling of 8001435729373 in words is "eight trillion, one billion, four hundred thirty-five million, seven hundred twenty-nine thousand, three hundred seventy-three".