6448311678787 has 32 divisors (see below), whose sum is σ = 7138961786880. Its totient is φ = 5775658560000.

The previous prime is 6448311678709. The next prime is 6448311678811. The reversal of 6448311678787 is 7878761138446.

It is a cyclic number.

It is not a de Polignac number, because 6448311678787 - 2¹⁹ = 6448311154499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6448311673787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 926344987 + ... + 926351947.

It is an arithmetic number, because the mean of its divisors is an integer number (223092555840).

Almost surely, 2^{6448311678787} is an apocalyptic number.

6448311678787 is a deficient number, since it is larger than the sum of its proper divisors (690650108093).

6448311678787 is a wasteful number, since it uses less digits than its factorization.

6448311678787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11035.

The product of its digits is 303464448, while the sum is 70.

The spelling of 6448311678787 in words is "six trillion, four hundred forty-eight billion, three hundred eleven million, six hundred seventy-eight thousand, seven hundred eighty-seven".