7478656161756 has 72 divisors (see below), whose sum is σ = 18921558665520. Its totient is φ = 2297985191424.

The previous prime is 7478656161709. The next prime is 7478656161761. The reversal of 7478656161756 is 6571616568747.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1028961 + ... + 4002008.

It is an arithmetic number, because the mean of its divisors is an integer number (262799425910).

Almost surely, 2^{7478656161756} is an apocalyptic number.

It is an amenable number.

7478656161756 is an abundant number, since it is smaller than the sum of its proper divisors (11442902503764).

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

7478656161756 is a wasteful number, since it uses less digits than its factorization.

7478656161756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031735 (or 5031720 counting only the distinct ones).

The product of its digits is 355622400, while the sum is 69.

The spelling of 7478656161756 in words is "seven trillion, four hundred seventy-eight billion, six hundred fifty-six million, one hundred sixty-one thousand, seven hundred fifty-six".