6485140577 has 4 divisors (see below), whose sum is σ = 6512050116. Its totient is φ = 6458231040.

The previous prime is 6485140561. The next prime is 6485140609. The reversal of 6485140577 is 7750415846.

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 4346633041 + 2138507536 = 65929^2 + 46244^2 .

It is a cyclic number.

It is not a de Polignac number, because 6485140577 - 2⁴ = 6485140561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6485140507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13454408 + ... + 13454889.

It is an arithmetic number, because the mean of its divisors is an integer number (1628012529).

Almost surely, 2^6485140577 is an apocalyptic number.

It is an amenable number.

6485140577 is a deficient number, since it is larger than the sum of its proper divisors (26909539).

6485140577 is a wasteful number, since it uses less digits than its factorization.

6485140577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26909538.

The product of its (nonzero) digits is 940800, while the sum is 47.

The square root of 6485140577 is about 80530.3705256594. The cubic root of 6485140577 is about 1864.8323661043.

The spelling of 6485140577 in words is "six billion, four hundred eighty-five million, one hundred forty thousand, five hundred seventy-seven".