7720628949216 has 72 divisors (see below), whose sum is σ = 23111093252520. Its totient is φ = 2438093350656.

The previous prime is 7720628949133. The next prime is 7720628949217. The reversal of 7720628949216 is 6129498260277.

7720628949216 is a `hidden beast` number, since 7 + 7 + 2 + 0 + 62 + 89 + 492 + 1 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×7720628949216² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7720628949217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 705461355 + ... + 705472298.

It is an arithmetic number, because the mean of its divisors is an integer number (320987406285).

Almost surely, 2^{7720628949216} is an apocalyptic number.

7720628949216 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

7720628949216 is an abundant number, since it is smaller than the sum of its proper divisors (15390464303304).

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

7720628949216 is a wasteful number, since it uses less digits than its factorization.

7720628949216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410933688 (or 1410933677 counting only the distinct ones).

The product of its (nonzero) digits is 36578304, while the sum is 63.

The spelling of 7720628949216 in words is "seven trillion, seven hundred twenty billion, six hundred twenty-eight million, nine hundred forty-nine thousand, two hundred sixteen".