6401222268 has 48 divisors (see below), whose sum is σ = 17074385664. Its totient is φ = 1828442880.

The previous prime is 6401222263. The next prime is 6401222291. The reversal of 6401222268 is 8622221046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6401222263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 426996 + ... + 441732.

It is an arithmetic number, because the mean of its divisors is an integer number (355716368).

Almost surely, 2^6401222268 is an apocalyptic number.

It is an amenable number.

6401222268 is an abundant number, since it is smaller than the sum of its proper divisors (10673163396).

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

6401222268 is a wasteful number, since it uses less digits than its factorization.

6401222268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19922 (or 19920 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 6401222268 is about 80007.6388103036. The cubic root of 6401222268 is about 1856.7537189530.

The spelling of 6401222268 in words is "six billion, four hundred one million, two hundred twenty-two thousand, two hundred sixty-eight".