6448738266 has 16 divisors (see below), whose sum is σ = 14330529600. Its totient is φ = 2149579404.

The previous prime is 6448738217. The next prime is 6448738267. The reversal of 6448738266 is 6628378446.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 119421079 = 6448738266 / (6 + 4 + 4 + 8 + 7 + 3 + 8 + 2 + 6 + 6).

It is not an unprimeable number, because it can be changed into a prime (6448738267) 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, 59710486 + ... + 59710593.

It is an arithmetic number, because the mean of its divisors is an integer number (895658100).

Almost surely, 2^6448738266 is an apocalyptic number.

6448738266 is an abundant number, since it is smaller than the sum of its proper divisors (7881791334).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6448738266 is a wasteful number, since it uses less digits than its factorization.

6448738266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119421090 (or 119421084 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 54.

The square root of 6448738266 is about 80304.0364240802. The cubic root of 6448738266 is about 1861.3365991211.

The spelling of 6448738266 in words is "six billion, four hundred forty-eight million, seven hundred thirty-eight thousand, two hundred sixty-six".