6513553156 has 12 divisors (see below), whose sum is σ = 12434965200. Its totient is φ = 2960705960.

The previous prime is 6513553147. The next prime is 6513553159.

It is a happy number.

6513553156 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (6513553159) 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, 74017606 + ... + 74017693.

It is an arithmetic number, because the mean of its divisors is an integer number (1036247100).

Almost surely, 2^6513553156 is an apocalyptic number.

It is an amenable number.

6513553156 is a deficient number, since it is larger than the sum of its proper divisors (5921412044).

6513553156 is a wasteful number, since it uses less digits than its factorization.

6513553156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148035314 (or 148035312 counting only the distinct ones).

The product of its digits is 202500, while the sum is 40.

The square root of 6513553156 is about 80706.5868191686. The cubic root of 6513553156 is about 1867.5517883259.

The spelling of 6513553156 in words is "six billion, five hundred thirteen million, five hundred fifty-three thousand, one hundred fifty-six".