6448217551 has 8 divisors (see below), whose sum is σ = 6546994304. Its totient is φ = 6349515480.

The previous prime is 6448217537. The next prime is 6448217579. The reversal of 6448217551 is 1557128446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6448217551 - 2¹⁵ = 6448184783 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6448217498 and 6448217507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448217591) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169756 + ... + 204238.

It is an arithmetic number, because the mean of its divisors is an integer number (818374288).

Almost surely, 2^6448217551 is an apocalyptic number.

6448217551 is a deficient number, since it is larger than the sum of its proper divisors (98776753).

6448217551 is a wasteful number, since it uses less digits than its factorization.

6448217551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37341.

The product of its digits is 268800, while the sum is 43.

The square root of 6448217551 is about 80300.7942115145. The cubic root of 6448217551 is about 1861.2864987792.

The spelling of 6448217551 in words is "six billion, four hundred forty-eight million, two hundred seventeen thousand, five hundred fifty-one".