6384240978445 has 128 divisors (see below), whose sum is σ = 8966730792960. Its totient is φ = 4317434880000.

The previous prime is 6384240978433. The next prime is 6384240978529. The reversal of 6384240978445 is 5448790424836.

It is a de Polignac number, because none of the positive numbers 2^k-6384240978445 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7891521201 + ... + 7891522009.

It is an arithmetic number, because the mean of its divisors is an integer number (70052584320).

Almost surely, 2^{6384240978445} is an apocalyptic number.

It is an amenable number.

6384240978445 is a deficient number, since it is larger than the sum of its proper divisors (2582489814515).

6384240978445 is a wasteful number, since it uses less digits than its factorization.

6384240978445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627.

The product of its (nonzero) digits is 185794560, while the sum is 64.

The spelling of 6384240978445 in words is "six trillion, three hundred eighty-four billion, two hundred forty million, nine hundred seventy-eight thousand, four hundred forty-five".