720646469055 has 32 divisors (see below), whose sum is σ = 1293833949120. Its totient is φ = 380539382400.

The previous prime is 720646469041. The next prime is 720646469093. The reversal of 720646469055 is 550964646027.

720646469055 is a `hidden beast` number, since 72 + 0 + 6 + 464 + 69 + 0 + 55 = 666.

It is not a de Polignac number, because 720646469055 - 2⁹ = 720646468543 is a prime.

It is a super-2 number, since 2×720646469055² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 720646468992 and 720646469010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26412712 + ... + 26439981.

It is an arithmetic number, because the mean of its divisors is an integer number (40432310910).

Almost surely, 2^720646469055 is an apocalyptic number.

720646469055 is a deficient number, since it is larger than the sum of its proper divisors (573187480065).

720646469055 is a wasteful number, since it uses less digits than its factorization.

720646469055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52852808 (or 52852802 counting only the distinct ones).

The product of its (nonzero) digits is 10886400, while the sum is 54.

The spelling of 720646469055 in words is "seven hundred twenty billion, six hundred forty-six million, four hundred sixty-nine thousand, fifty-five".