6511651606 has 4 divisors (see below), whose sum is σ = 9767477412. Its totient is φ = 3255825802.

The previous prime is 6511651591. The next prime is 6511651609. The reversal of 6511651606 is 6061561156.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6511651609) by changing a digit.

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 as a sum of consecutive naturals, namely, 1627912900 + ... + 1627912903.

It is an arithmetic number, because the mean of its divisors is an integer number (2441869353).

Almost surely, 2^6511651606 is an apocalyptic number.

6511651606 is a deficient number, since it is larger than the sum of its proper divisors (3255825806).

6511651606 is a wasteful number, since it uses less digits than its factorization.

6511651606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3255825805.

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 6511651606 is about 80694.8053222759. The cubic root of 6511651606 is about 1867.3700345450.

The spelling of 6511651606 in words is "six billion, five hundred eleven million, six hundred fifty-one thousand, six hundred six".