6791645681444 has 48 divisors (see below), whose sum is σ = 12810031407600. Its totient is φ = 3132061986816.

The previous prime is 6791645681419. The next prime is 6791645681497. The reversal of 6791645681444 is 4441865461976.

It can be written as a sum of positive squares in 8 ways, for example, as 18441640000 + 6773204041444 = 135800^2 + 2602538^2 .

It is a super-2 number, since 2×6791645681444² (a number of 26 digits) contains 22 as substring.

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, 371342252 + ... + 371360540.

It is an arithmetic number, because the mean of its divisors is an integer number (266875654325).

Almost surely, 2^{6791645681444} is an apocalyptic number.

It is an amenable number.

6791645681444 is a deficient number, since it is larger than the sum of its proper divisors (6018385726156).

6791645681444 is a wasteful number, since it uses less digits than its factorization.

6791645681444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23712 (or 23710 counting only the distinct ones).

The product of its digits is 139345920, while the sum is 65.

The spelling of 6791645681444 in words is "six trillion, seven hundred ninety-one billion, six hundred forty-five million, six hundred eighty-one thousand, four hundred forty-four".