6512256077 has 4 divisors (see below), whose sum is σ = 6688263036. Its totient is φ = 6336249120.

The previous prime is 6512256019. The next prime is 6512256097. The reversal of 6512256077 is 7706522156.

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 5285435401 + 1226820676 = 72701^2 + 35026^2 .

It is a cyclic number.

It is not a de Polignac number, because 6512256077 - 2⁶ = 6512256013 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 (6512256097) 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, 88003424 + ... + 88003497.

It is an arithmetic number, because the mean of its divisors is an integer number (1672065759).

Almost surely, 2^6512256077 is an apocalyptic number.

It is an amenable number.

6512256077 is a deficient number, since it is larger than the sum of its proper divisors (176006959).

6512256077 is a wasteful number, since it uses less digits than its factorization.

6512256077 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176006958.

The product of its (nonzero) digits is 176400, while the sum is 41.

The square root of 6512256077 is about 80698.5506499342. The cubic root of 6512256077 is about 1867.4278148735.

The spelling of 6512256077 in words is "six billion, five hundred twelve million, two hundred fifty-six thousand, seventy-seven".