7738908056640 has 448 divisors, whose sum is σ = 28228541886720. Its totient is φ = 1994548101120.

The previous prime is 7738908056629. The next prime is 7738908056699. The reversal of 7738908056640 is 466508098377.

7738908056640 is a `hidden beast` number, since 77 + 389 + 0 + 80 + 56 + 64 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37801594 + ... + 38005766.

It is an arithmetic number, because the mean of its divisors is an integer number (63010138140).

Almost surely, 2^{7738908056640} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7738908056640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14114270943360).

7738908056640 is an abundant number, since it is smaller than the sum of its proper divisors (20489633830080).

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

7738908056640 is a wasteful number, since it uses less digits than its factorization.

7738908056640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204347 (or 204331 counting only the distinct ones).

The product of its (nonzero) digits is 60963840, while the sum is 63.

The spelling of 7738908056640 in words is "seven trillion, seven hundred thirty-eight billion, nine hundred eight million, fifty-six thousand, six hundred forty".