6561259062 has 64 divisors (see below), whose sum is σ = 13783924224. Its totient is φ = 2080097280.

The previous prime is 6561259043. The next prime is 6561259091. The reversal of 6561259062 is 2609521656.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1785487 + ... + 1789157.

It is an arithmetic number, because the mean of its divisors is an integer number (215373816).

Almost surely, 2^6561259062 is an apocalyptic number.

6561259062 is an abundant number, since it is smaller than the sum of its proper divisors (7222665162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6561259062 is a wasteful number, since it uses less digits than its factorization.

6561259062 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3893.

The product of its (nonzero) digits is 194400, while the sum is 42.

The square root of 6561259062 is about 81001.5991323628. The cubic root of 6561259062 is about 1872.1000801424.

The spelling of 6561259062 in words is "six billion, five hundred sixty-one million, two hundred fifty-nine thousand, sixty-two".