721553323312010 has 16 divisors (see below), whose sum is σ = 1484338265099136. Its totient is φ = 247389710849808.

The previous prime is 721553323311917. The next prime is 721553323312013. The reversal of 721553323312010 is 10213323355127.

It is not an unprimeable number, because it can be changed into a prime (721553323312013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5153952309302 + ... + 5153952309441.

It is an arithmetic number, because the mean of its divisors is an integer number (92771141568696).

Almost surely, 2^{721553323312010} is an apocalyptic number.

721553323312010 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

721553323312010 is an abundant number, since it is smaller than the sum of its proper divisors (762784941787126).

721553323312010 is a wasteful number, since it uses less digits than its factorization.

721553323312010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10307904618757.

The product of its (nonzero) digits is 113400, while the sum is 38.

Adding to 721553323312010 its reverse (10213323355127), we get a palindrome (731766646667137).

The spelling of 721553323312010 in words is "seven hundred twenty-one trillion, five hundred fifty-three billion, three hundred twenty-three million, three hundred twelve thousand, ten".