6439178472 has 16 divisors (see below), whose sum is σ = 16097946240. Its totient is φ = 2146392816.

The previous prime is 6439178461. The next prime is 6439178479. The reversal of 6439178472 is 2748719346.

It is not an unprimeable number, because it can be changed into a prime (6439178479) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134149528 + ... + 134149575.

It is an arithmetic number, because the mean of its divisors is an integer number (1006121640).

Almost surely, 2^6439178472 is an apocalyptic number.

It is an amenable number.

6439178472 is an abundant number, since it is smaller than the sum of its proper divisors (9658767768).

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

6439178472 is a wasteful number, since it uses less digits than its factorization.

6439178472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268299112 (or 268299108 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 51.

The square root of 6439178472 is about 80244.4918483506. The cubic root of 6439178472 is about 1860.4163780514.

The spelling of 6439178472 in words is "six billion, four hundred thirty-nine million, one hundred seventy-eight thousand, four hundred seventy-two".