6446145376 has 48 divisors (see below), whose sum is σ = 13860322560. Its totient is φ = 2926730880.

The previous prime is 6446145367. The next prime is 6446145397. The reversal of 6446145376 is 6735416446.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313525 + ... + 333451.

It is an arithmetic number, because the mean of its divisors is an integer number (288756720).

Almost surely, 2^6446145376 is an apocalyptic number.

It is an amenable number.

6446145376 is an abundant number, since it is smaller than the sum of its proper divisors (7414177184).

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

6446145376 is a wasteful number, since it uses less digits than its factorization.

6446145376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20867 (or 20859 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 46.

The square root of 6446145376 is about 80287.8905937876. The cubic root of 6446145376 is about 1861.0870987361.

It can be divided in two parts, 6446145 and 376, that added together give a square (6446521 = 2539²).

The spelling of 6446145376 in words is "six billion, four hundred forty-six million, one hundred forty-five thousand, three hundred seventy-six".