6401100016 has 20 divisors (see below), whose sum is σ = 12636135432. Its totient is φ = 3140161856.

The previous prime is 6401099993. The next prime is 6401100071. The reversal of 6401100016 is 6100011046.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 6401099966 and 6401100002.

It is a congruent number.

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, 3773386 + ... + 3775081.

Almost surely, 2^6401100016 is an apocalyptic number.

It is an amenable number.

6401100016 is a deficient number, since it is larger than the sum of its proper divisors (6235035416).

6401100016 is a wasteful number, since it uses less digits than its factorization.

6401100016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7548528 (or 7548522 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 6401100016 is about 80006.8748046066. The cubic root of 6401100016 is about 1856.7418986427.

The spelling of 6401100016 in words is "six billion, four hundred one million, one hundred thousand, sixteen".