7478556180479 has 4 divisors (see below), whose sum is σ = 7506357504840. Its totient is φ = 7450754856120.

The previous prime is 7478556180461. The next prime is 7478556180493. The reversal of 7478556180479 is 9740816558747.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7478556180479 - 2³² = 7474261213183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7478556180449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13900661777 + ... + 13900662314.

It is an arithmetic number, because the mean of its divisors is an integer number (1876589376210).

Almost surely, 2^{7478556180479} is an apocalyptic number.

7478556180479 is a deficient number, since it is larger than the sum of its proper divisors (27801324361).

7478556180479 is a wasteful number, since it uses less digits than its factorization.

7478556180479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27801324360.

The product of its (nonzero) digits is 474163200, while the sum is 71.

The spelling of 7478556180479 in words is "seven trillion, four hundred seventy-eight billion, five hundred fifty-six million, one hundred eighty thousand, four hundred seventy-nine".