6402173505 has 64 divisors (see below), whose sum is σ = 12706971648. Its totient is φ = 2680231680.

The previous prime is 6402173471. The next prime is 6402173507. The reversal of 6402173505 is 5053712046.

It is not a de Polignac number, because 6402173505 - 2⁹ = 6402172993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6402173507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 154890 + ... + 191820.

It is an arithmetic number, because the mean of its divisors is an integer number (198546432).

Almost surely, 2^6402173505 is an apocalyptic number.

6402173505 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6402173505 is a deficient number, since it is larger than the sum of its proper divisors (6304798143).

6402173505 is a wasteful number, since it uses less digits than its factorization.

6402173505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37086.

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 6402173505 is about 80013.5832530952. The cubic root of 6402173505 is about 1856.8456870847.

The spelling of 6402173505 in words is "six billion, four hundred two million, one hundred seventy-three thousand, five hundred five".