6448792978446 has 96 divisors (see below), whose sum is σ = 16900064218368. Its totient is φ = 1600734620160.

The previous prime is 6448792978427. The next prime is 6448792978447.

6448792978446 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (78).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6448792978447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26601000 + ... + 26842331.

It is an arithmetic number, because the mean of its divisors is an integer number (176042335608).

Almost surely, 2^{6448792978446} is an apocalyptic number.

6448792978446 is an abundant number, since it is smaller than the sum of its proper divisors (10451271239922).

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

6448792978446 is a wasteful number, since it uses less digits than its factorization.

6448792978446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53443386 (or 53443373 counting only the distinct ones).

The product of its digits is 4682022912, while the sum is 78.

The spelling of 6448792978446 in words is "six trillion, four hundred forty-eight billion, seven hundred ninety-two million, nine hundred seventy-eight thousand, four hundred forty-six".