6448963872390 has 64 divisors (see below), whose sum is σ = 16982583581376. Its totient is φ = 1557485609472.

The previous prime is 6448963872383. The next prime is 6448963872497. The reversal of 6448963872390 is 932783698446.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155977489 + ... + 156018828.

It is an arithmetic number, because the mean of its divisors is an integer number (265352868459).

Almost surely, 2^{6448963872390} is an apocalyptic number.

6448963872390 is an abundant number, since it is smaller than the sum of its proper divisors (10533619708986).

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

6448963872390 is a wasteful number, since it uses less digits than its factorization.

6448963872390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311996393.

The product of its (nonzero) digits is 376233984, while the sum is 69.

The spelling of 6448963872390 in words is "six trillion, four hundred forty-eight billion, nine hundred sixty-three million, eight hundred seventy-two thousand, three hundred ninety".