721434350203 has 12 divisors (see below), whose sum is σ = 851951022960. Its totient is φ = 598424801040.

The previous prime is 721434350191. The next prime is 721434350213. The reversal of 721434350203 is 302053434127.

It is not a de Polignac number, because 721434350203 - 2¹³ = 721434342011 is a prime.

It is a super-2 number, since 2×721434350203² (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 (721434350213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53615568 + ... + 53629021.

It is an arithmetic number, because the mean of its divisors is an integer number (70995918580).

Almost surely, 2^721434350203 is an apocalyptic number.

721434350203 is a deficient number, since it is larger than the sum of its proper divisors (130516672757).

721434350203 is a wasteful number, since it uses less digits than its factorization.

721434350203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107244658 (or 107244627 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 34.

The spelling of 721434350203 in words is "seven hundred twenty-one billion, four hundred thirty-four million, three hundred fifty thousand, two hundred three".