6497788821892 has 24 divisors (see below), whose sum is σ = 12042322790400. Its totient is φ = 3057198257280.

The previous prime is 6497788821871. The next prime is 6497788821911. The reversal of 6497788821892 is 2981288877946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8777892 + ... + 9489307.

It is an arithmetic number, because the mean of its divisors is an integer number (501763449600).

Almost surely, 2^{6497788821892} is an apocalyptic number.

It is an amenable number.

6497788821892 is a deficient number, since it is larger than the sum of its proper divisors (5544533968508).

6497788821892 is a wasteful number, since it uses less digits than its factorization.

6497788821892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18272451 (or 18272449 counting only the distinct ones).

The product of its digits is 1560674304, while the sum is 79.

The spelling of 6497788821892 in words is "six trillion, four hundred ninety-seven billion, seven hundred eighty-eight million, eight hundred twenty-one thousand, eight hundred ninety-two".