6401783296 has 80 divisors (see below), whose sum is σ = 13874580720. Its totient is φ = 2938961920.

The previous prime is 6401783273. The next prime is 6401783299. The reversal of 6401783296 is 6923871046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401783299) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 347895 + ... + 365833.

It is an arithmetic number, because the mean of its divisors is an integer number (173432259).

Almost surely, 2^6401783296 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6401783296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6937290360).

6401783296 is an abundant number, since it is smaller than the sum of its proper divisors (7472797424).

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

6401783296 is a wasteful number, since it uses less digits than its factorization.

6401783296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18015 (or 17999 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 6401783296 is about 80011.1448237057. The cubic root of 6401783296 is about 1856.8079617393.

The spelling of 6401783296 in words is "six billion, four hundred one million, seven hundred eighty-three thousand, two hundred ninety-six".