720721372206 has 32 divisors (see below), whose sum is σ = 1575985248000. Its totient is φ = 217913991680.

The previous prime is 720721372201. The next prime is 720721372211. The reversal of 720721372206 is 602273127027.

It is an interprime number because it is at equal distance from previous prime (720721372201) and next prime (720721372211).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (720721372201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12130746 + ... + 12190013.

It is an arithmetic number, because the mean of its divisors is an integer number (49249539000).

Almost surely, 2^720721372206 is an apocalyptic number.

720721372206 is an abundant number, since it is smaller than the sum of its proper divisors (855263875794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

720721372206 is a wasteful number, since it uses less digits than its factorization.

720721372206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24321224.

The product of its (nonzero) digits is 98784, while the sum is 39.

The spelling of 720721372206 in words is "seven hundred twenty billion, seven hundred twenty-one million, three hundred seventy-two thousand, two hundred six".