721000104793 has 4 divisors (see below), whose sum is σ = 721336865508. Its totient is φ = 720663344080.

The previous prime is 721000104749. The next prime is 721000104809. The reversal of 721000104793 is 397401000127.

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 687484747609 + 33515357184 = 829147^2 + 183072^2 .

It is a cyclic number.

It is not a de Polignac number, because 721000104793 - 2²⁵ = 720966550361 is a prime.

It is a super-2 number, since 2×721000104793² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (721000134793) 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 3 ways as a sum of consecutive naturals, for example, 168377146 + ... + 168381427.

It is an arithmetic number, because the mean of its divisors is an integer number (180334216377).

Almost surely, 2^721000104793 is an apocalyptic number.

It is an amenable number.

721000104793 is a deficient number, since it is larger than the sum of its proper divisors (336760715).

721000104793 is a wasteful number, since it uses less digits than its factorization.

721000104793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336760714.

The product of its (nonzero) digits is 10584, while the sum is 34.

The spelling of 721000104793 in words is "seven hundred twenty-one billion, one hundred four thousand, seven hundred ninety-three".