720417325814642 has 16 divisors (see below), whose sum is σ = 1125129977869464. Its totient is φ = 345662051568000.

The previous prime is 720417325814579. The next prime is 720417325814663. The reversal of 720417325814642 is 246418523714027.

It can be written as a sum of positive squares in 4 ways, for example, as 131705668263481 + 588711657551161 = 11476309^2 + 24263381^2 .

It is a super-2 number, since 2×720417325814642² (a number of 31 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72012922409 + ... + 72012932412.

Almost surely, 2^{720417325814642} is an apocalyptic number.

720417325814642 is a deficient number, since it is larger than the sum of its proper divisors (404712652054822).

720417325814642 is a wasteful number, since it uses less digits than its factorization.

720417325814642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144025854925.

The product of its (nonzero) digits is 18063360, while the sum is 56.

The spelling of 720417325814642 in words is "seven hundred twenty trillion, four hundred seventeen billion, three hundred twenty-five million, eight hundred fourteen thousand, six hundred forty-two".