7481661387344 has 40 divisors (see below), whose sum is σ = 14537782736640. Its totient is φ = 3729977942400.

The previous prime is 7481661387331. The next prime is 7481661387371. The reversal of 7481661387344 is 4437831661847.

It is a super-2 number, since 2×7481661387344² (a number of 27 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 52664729 + ... + 52806599.

It is an arithmetic number, because the mean of its divisors is an integer number (363444568416).

Almost surely, 2^{7481661387344} is an apocalyptic number.

It is an amenable number.

7481661387344 is a deficient number, since it is larger than the sum of its proper divisors (7056121349296).

7481661387344 is a wasteful number, since it uses less digits than its factorization.

7481661387344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151419 (or 151413 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 62.

The spelling of 7481661387344 in words is "seven trillion, four hundred eighty-one billion, six hundred sixty-one million, three hundred eighty-seven thousand, three hundred forty-four".