6427291344 has 80 divisors (see below), whose sum is σ = 17500665600. Its totient is φ = 2029500928.

The previous prime is 6427291309. The next prime is 6427291421. The reversal of 6427291344 is 4431927246.

It is a junction number, because it is equal to n+sod(n) for n = 6427291296 and 6427291305.

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, 30217 + ... + 117335.

It is an arithmetic number, because the mean of its divisors is an integer number (218758320).

Almost surely, 2^6427291344 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 6427291344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8750332800).

6427291344 is an abundant number, since it is smaller than the sum of its proper divisors (11073374256).

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

6427291344 is a wasteful number, since it uses less digits than its factorization.

6427291344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87212 (or 87206 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 6427291344 is about 80170.3894464783. The cubic root of 6427291344 is about 1859.2708576896.

The spelling of 6427291344 in words is "six billion, four hundred twenty-seven million, two hundred ninety-one thousand, three hundred forty-four".