6501601686607 has 4 divisors (see below), whose sum is σ = 6843791249080. Its totient is φ = 6159412124136.

The previous prime is 6501601686539. The next prime is 6501601686631. The reversal of 6501601686607 is 7066861061056.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 6501601686607 - 2²³ = 6501593297999 is a prime.

It is a super-3 number, since 3×6501601686607³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6501601686007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 171094781208 + ... + 171094781245.

It is an arithmetic number, because the mean of its divisors is an integer number (1710947812270).

Almost surely, 2^{6501601686607} is an apocalyptic number.

6501601686607 is a deficient number, since it is larger than the sum of its proper divisors (342189562473).

6501601686607 is a wasteful number, since it uses less digits than its factorization.

6501601686607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342189562472.

The product of its (nonzero) digits is 2177280, while the sum is 52.

The spelling of 6501601686607 in words is "six trillion, five hundred one billion, six hundred one million, six hundred eighty-six thousand, six hundred seven".