720355032013 has 4 divisors (see below), whose sum is σ = 720356736060. Its totient is φ = 720353327968.

The previous prime is 720355032011. The next prime is 720355032031. The reversal of 720355032013 is 310230553027.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 515542668169 + 204812363844 = 718013^2 + 452562^2 .

It is a cyclic number.

It is not a de Polignac number, because 720355032013 - 2¹ = 720355032011 is a prime.

It is a super-2 number, since 2×720355032013² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720355032011) 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, 313881 + ... + 1240657.

It is an arithmetic number, because the mean of its divisors is an integer number (180089184015).

Almost surely, 2^720355032013 is an apocalyptic number.

It is an amenable number.

720355032013 is a deficient number, since it is larger than the sum of its proper divisors (1704047).

720355032013 is an equidigital number, since it uses as much as digits as its factorization.

720355032013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1704046.

The product of its (nonzero) digits is 18900, while the sum is 31.

The spelling of 720355032013 in words is "seven hundred twenty billion, three hundred fifty-five million, thirty-two thousand, thirteen".