6440848468415 has 16 divisors (see below), whose sum is σ = 7806278390976. Its totient is φ = 5101181568000.

The previous prime is 6440848468409. The next prime is 6440848468427. The reversal of 6440848468415 is 5148648480446.

It is not a de Polignac number, because 6440848468415 - 2²⁸ = 6440580032959 is a prime.

It is a super-2 number, since 2×6440848468415² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

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, 4813679 + ... + 6004431.

It is an arithmetic number, because the mean of its divisors is an integer number (487892399436).

Almost surely, 2^{6440848468415} is an apocalyptic number.

6440848468415 is a deficient number, since it is larger than the sum of its proper divisors (1365429922561).

6440848468415 is a wasteful number, since it uses less digits than its factorization.

6440848468415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201570.

The product of its (nonzero) digits is 94371840, while the sum is 62.

The spelling of 6440848468415 in words is "six trillion, four hundred forty billion, eight hundred forty-eight million, four hundred sixty-eight thousand, four hundred fifteen".