6403651122 has 64 divisors (see below), whose sum is σ = 14622280704. Its totient is φ = 1850629440.

The previous prime is 6403651091. The next prime is 6403651129. The reversal of 6403651122 is 2211563046.

It is a self number, because there is not a number n which added to its sum of digits gives 6403651122.

It is not an unprimeable number, because it can be changed into a prime (6403651129) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 520668 + ... + 532824.

It is an arithmetic number, because the mean of its divisors is an integer number (228473136).

Almost surely, 2^6403651122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6403651122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7311140352).

6403651122 is an abundant number, since it is smaller than the sum of its proper divisors (8218629582).

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

6403651122 is a wasteful number, since it uses less digits than its factorization.

6403651122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12543.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 6403651122 is about 80022.8162588646. The cubic root of 6403651122 is about 1856.9885289751.

The spelling of 6403651122 in words is "six billion, four hundred three million, six hundred fifty-one thousand, one hundred twenty-two".