6551465641 has 4 divisors (see below), whose sum is σ = 7487389312. Its totient is φ = 5615541972.

The previous prime is 6551465617. The next prime is 6551465663. The reversal of 6551465641 is 1465641556.

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 6551465641 - 2¹¹ = 6551463593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6551465671) 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, 467961825 + ... + 467961838.

It is an arithmetic number, because the mean of its divisors is an integer number (1871847328).

Almost surely, 2^6551465641 is an apocalyptic number.

It is an amenable number.

6551465641 is a deficient number, since it is larger than the sum of its proper divisors (935923671).

6551465641 is an equidigital number, since it uses as much as digits as its factorization.

6551465641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 935923670.

The product of its digits is 432000, while the sum is 43.

The square root of 6551465641 is about 80941.1245350594. The cubic root of 6551465641 is about 1871.1681759847.

The spelling of 6551465641 in words is "six billion, five hundred fifty-one million, four hundred sixty-five thousand, six hundred forty-one".