7876545457 has 12 divisors (see below), whose sum is σ = 8669996020. Its totient is φ = 7150318560.

The previous prime is 7876545419. The next prime is 7876545473. The reversal of 7876545457 is 7545456787.

It can be written as a sum of positive squares in 2 ways, for example, as 5328416016 + 2548129441 = 72996^2 + 50479^2 .

It is not a de Polignac number, because 7876545457 - 2⁷ = 7876545329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7876545407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39883 + ... + 131695.

Almost surely, 2^7876545457 is an apocalyptic number.

It is an amenable number.

7876545457 is a deficient number, since it is larger than the sum of its proper divisors (793450563).

7876545457 is a wasteful number, since it uses less digits than its factorization.

7876545457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92544 (or 92533 counting only the distinct ones).

The product of its digits is 32928000, while the sum is 58.

The square root of 7876545457 is about 88749.9039830467. The cubic root of 7876545457 is about 1989.6587427754.

The spelling of 7876545457 in words is "seven billion, eight hundred seventy-six million, five hundred forty-five thousand, four hundred fifty-seven".