720005205772 has 24 divisors (see below), whose sum is σ = 1350327043296. Its totient is φ = 335043548928.

The previous prime is 720005205767. The next prime is 720005205779. The reversal of 720005205772 is 277502500027.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is not an unprimeable number, because it can be changed into a prime (720005205779) 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, 105755293 + ... + 105762100.

It is an arithmetic number, because the mean of its divisors is an integer number (56263626804).

Almost surely, 2^720005205772 is an apocalyptic number.

It is an amenable number.

720005205772 is a deficient number, since it is larger than the sum of its proper divisors (630321837524).

720005205772 is a wasteful number, since it uses less digits than its factorization.

720005205772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211517457 (or 211517455 counting only the distinct ones).

The product of its (nonzero) digits is 68600, while the sum is 37.

Adding to 720005205772 its reverse (277502500027), we get a palindrome (997507705799).

The spelling of 720005205772 in words is "seven hundred twenty billion, five million, two hundred five thousand, seven hundred seventy-two".