7481663117556 has 24 divisors (see below), whose sum is σ = 18059186836320. Its totient is φ = 2407891577952.

The previous prime is 7481663117521. The next prime is 7481663117569. The reversal of 7481663117556 is 6557113661847.

It is a self number, because there is not a number n which added to its sum of digits gives 7481663117556.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10749515626 + ... + 10749516321.

It is an arithmetic number, because the mean of its divisors is an integer number (752466118180).

Almost surely, 2^{7481663117556} is an apocalyptic number.

It is an amenable number.

7481663117556 is an abundant number, since it is smaller than the sum of its proper divisors (10577523718764).

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

7481663117556 is a wasteful number, since it uses less digits than its factorization.

7481663117556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21499031983 (or 21499031981 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 60.

The spelling of 7481663117556 in words is "seven trillion, four hundred eighty-one billion, six hundred sixty-three million, one hundred seventeen thousand, five hundred fifty-six".