6510531655255 has 4 divisors (see below), whose sum is σ = 7812637986312. Its totient is φ = 5208425324200.

The previous prime is 6510531655231. The next prime is 6510531655337. The reversal of 6510531655255 is 5525561350156.

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

It is not a de Polignac number, because 6510531655255 - 2⁵ = 6510531655223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6510531655199 and 6510531655208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 651053165521 + ... + 651053165530.

It is an arithmetic number, because the mean of its divisors is an integer number (1953159496578).

Almost surely, 2^{6510531655255} is an apocalyptic number.

6510531655255 is a deficient number, since it is larger than the sum of its proper divisors (1302106331057).

6510531655255 is a wasteful number, since it uses less digits than its factorization.

6510531655255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1302106331056.

The product of its (nonzero) digits is 3375000, while the sum is 49.

The spelling of 6510531655255 in words is "six trillion, five hundred ten billion, five hundred thirty-one million, six hundred fifty-five thousand, two hundred fifty-five".