6379944253520 has 80 divisors (see below), whose sum is σ = 15080862733248. Its totient is φ = 2509530439680.

The previous prime is 6379944253519. The next prime is 6379944253577. The reversal of 6379944253520 is 253524499736.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 6379944253520.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2061275 + ... + 4124165.

Almost surely, 2^{6379944253520} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6379944253520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7540431366624).

6379944253520 is an abundant number, since it is smaller than the sum of its proper divisors (8700918479728).

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

6379944253520 is a wasteful number, since it uses less digits than its factorization.

6379944253520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063548 (or 2063542 counting only the distinct ones).

The product of its (nonzero) digits is 48988800, while the sum is 59.

The spelling of 6379944253520 in words is "six trillion, three hundred seventy-nine billion, nine hundred forty-four million, two hundred fifty-three thousand, five hundred twenty".