7455478457547 has 8 divisors (see below), whose sum is σ = 11045153270480. Its totient is φ = 4970318971680.

The previous prime is 7455478457521. The next prime is 7455478457561. The reversal of 7455478457547 is 7457548745547.

7455478457547 is a `hidden beast` number, since 7 + 4 + 5 + 5 + 4 + 7 + 8 + 4 + 575 + 47 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-7455478457547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7455478457507) by changing a digit.

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, 138064415854 + ... + 138064415907.

It is an arithmetic number, because the mean of its divisors is an integer number (1380644158810).

Almost surely, 2^{7455478457547} is an apocalyptic number.

7455478457547 is a deficient number, since it is larger than the sum of its proper divisors (3589674812933).

7455478457547 is a wasteful number, since it uses less digits than its factorization.

7455478457547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276128831770 (or 276128831764 counting only the distinct ones).

The product of its digits is 3073280000, while the sum is 72.

The spelling of 7455478457547 in words is "seven trillion, four hundred fifty-five billion, four hundred seventy-eight million, four hundred fifty-seven thousand, five hundred forty-seven".