7455478485281 has 4 divisors (see below), whose sum is σ = 7456989837972. Its totient is φ = 7453967132592.

The previous prime is 7455478485271. The next prime is 7455478485283. The reversal of 7455478485281 is 1825848745547.

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

It can be written as a sum of positive squares in 2 ways, for example, as 686942592400 + 6768535892881 = 828820^2 + 2601641^2 .

It is a cyclic number.

It is not a de Polignac number, because 7455478485281 - 2³⁴ = 7438298616097 is a prime.

It is a super-2 number, since 2×7455478485281² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7455478485283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 755668946 + ... + 755678811.

It is an arithmetic number, because the mean of its divisors is an integer number (1864247459493).

Almost surely, 2^{7455478485281} is an apocalyptic number.

It is an amenable number.

7455478485281 is a deficient number, since it is larger than the sum of its proper divisors (1511352691).

7455478485281 is a wasteful number, since it uses less digits than its factorization.

7455478485281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511352690.

The product of its digits is 401408000, while the sum is 68.

The spelling of 7455478485281 in words is "seven trillion, four hundred fifty-five billion, four hundred seventy-eight million, four hundred eighty-five thousand, two hundred eighty-one".