800073601639 has 4 divisors (see below), whose sum is σ = 861617724856. Its totient is φ = 738529478424.

The previous prime is 800073601637. The next prime is 800073601669. The reversal of 800073601639 is 936106370008.

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

It is a cyclic number.

It is not a de Polignac number, because 800073601639 - 2¹ = 800073601637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 800073601595 and 800073601604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (800073601633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30772061589 + ... + 30772061614.

It is an arithmetic number, because the mean of its divisors is an integer number (215404431214).

Almost surely, 2^800073601639 is an apocalyptic number.

800073601639 is a deficient number, since it is larger than the sum of its proper divisors (61544123217).

800073601639 is a wasteful number, since it uses less digits than its factorization.

800073601639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61544123216.

The product of its (nonzero) digits is 163296, while the sum is 43.

The spelling of 800073601639 in words is "eight hundred billion, seventy-three million, six hundred one thousand, six hundred thirty-nine".