6491078356 has 12 divisors (see below), whose sum is σ = 12982156768. Its totient is φ = 2781890712.

The previous prime is 6491078353. The next prime is 6491078359. The reversal of 6491078356 is 6538701946.

It is an interprime number because it is at equal distance from previous prime (6491078353) and next prime (6491078359).

6491078356 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6491078353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 115912086 + ... + 115912141.

Almost surely, 2^6491078356 is an apocalyptic number.

It is an amenable number.

6491078356 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

6491078356 is a wasteful number, since it uses less digits than its factorization.

6491078356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231824238 (or 231824236 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 49.

The square root of 6491078356 is about 80567.2287968253. The cubic root of 6491078356 is about 1865.4013378219.

The spelling of 6491078356 in words is "six billion, four hundred ninety-one million, seventy-eight thousand, three hundred fifty-six".