720139520780 has 24 divisors (see below), whose sum is σ = 1515885156240. Its totient is φ = 287371586880.

The previous prime is 720139520773. The next prime is 720139520809. The reversal of 720139520780 is 87025931027.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42755210 + ... + 42772049.

It is an arithmetic number, because the mean of its divisors is an integer number (63161881510).

Almost surely, 2^720139520780 is an apocalyptic number.

It is an amenable number.

720139520780 is an abundant number, since it is smaller than the sum of its proper divisors (795745635460).

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

720139520780 is a wasteful number, since it uses less digits than its factorization.

720139520780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85527689 (or 85527687 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The spelling of 720139520780 in words is "seven hundred twenty billion, one hundred thirty-nine million, five hundred twenty thousand, seven hundred eighty".