6445488898 has 8 divisors (see below), whose sum is σ = 9758590992. Its totient is φ = 3192625236.

The previous prime is 6445488871. The next prime is 6445488941. The reversal of 6445488898 is 8988845446.

It is a happy number.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15059340 + ... + 15059767.

It is an arithmetic number, because the mean of its divisors is an integer number (1219823874).

Almost surely, 2^6445488898 is an apocalyptic number.

6445488898 is a deficient number, since it is larger than the sum of its proper divisors (3313102094).

6445488898 is a wasteful number, since it uses less digits than its factorization.

6445488898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30119216.

The product of its digits is 70778880, while the sum is 64.

The square root of 6445488898 is about 80283.8022143944. The cubic root of 6445488898 is about 1861.0239186421.

The spelling of 6445488898 in words is "six billion, four hundred forty-five million, four hundred eighty-eight thousand, eight hundred ninety-eight".