6551501669 has 4 divisors (see below), whose sum is σ = 6649285344. Its totient is φ = 6453717996.

The previous prime is 6551501623. The next prime is 6551501711. The reversal of 6551501669 is 9661051556.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6551501669 - 2²⁰ = 6550453093 is a prime.

It is a super-2 number, since 2×6551501669² = 85844348237819571122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551501569) 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, 48891737 + ... + 48891870.

It is an arithmetic number, because the mean of its divisors is an integer number (1662321336).

Almost surely, 2^6551501669 is an apocalyptic number.

It is an amenable number.

6551501669 is a deficient number, since it is larger than the sum of its proper divisors (97783675).

6551501669 is an equidigital number, since it uses as much as digits as its factorization.

6551501669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97783674.

The product of its (nonzero) digits is 243000, while the sum is 44.

The square root of 6551501669 is about 80941.3470915823. The cubic root of 6551501669 is about 1871.1716059716.

The spelling of 6551501669 in words is "six billion, five hundred fifty-one million, five hundred one thousand, six hundred sixty-nine".