6448620129 has 8 divisors (see below), whose sum is σ = 9826468800. Its totient is φ = 3684925776.

The previous prime is 6448620091. The next prime is 6448620131. The reversal of 6448620129 is 9210268446.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6448620129 - 2⁸ = 6448619873 is a prime.

It is a super-3 number, since 3×6448620129³ (a number of 30 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (6448620029) 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, 153538554 + ... + 153538595.

It is an arithmetic number, because the mean of its divisors is an integer number (1228308600).

Almost surely, 2^6448620129 is an apocalyptic number.

It is an amenable number.

6448620129 is a deficient number, since it is larger than the sum of its proper divisors (3377848671).

6448620129 is a wasteful number, since it uses less digits than its factorization.

6448620129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307077159.

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 6448620129 is about 80303.3008599273. The cubic root of 6448620129 is about 1861.3252328633.

The spelling of 6448620129 in words is "six billion, four hundred forty-eight million, six hundred twenty thousand, one hundred twenty-nine".