720420251052 has 24 divisors (see below), whose sum is σ = 1726412494576. Its totient is φ = 233649811008.

The previous prime is 720420251041. The next prime is 720420251071. The reversal of 720420251052 is 250152024027.

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, 811283623 + ... + 811284510.

Almost surely, 2^720420251052 is an apocalyptic number.

It is an amenable number.

720420251052 is an abundant number, since it is smaller than the sum of its proper divisors (1005992243524).

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

720420251052 is a wasteful number, since it uses less digits than its factorization.

720420251052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1622568177 (or 1622568175 counting only the distinct ones).

The product of its (nonzero) digits is 11200, while the sum is 30.

Adding to 720420251052 its reverse (250152024027), we get a palindrome (970572275079).

The spelling of 720420251052 in words is "seven hundred twenty billion, four hundred twenty million, two hundred fifty-one thousand, fifty-two".