6422115840 has 320 divisors, whose sum is σ = 24847409664. Its totient is φ = 1381367808.

The previous prime is 6422115829. The next prime is 6422115871. The reversal of 6422115840 is 485112246.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (320).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 910407 + ... + 917433.

Almost surely, 2^6422115840 is an apocalyptic number.

6422115840 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6422115840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12423704832).

6422115840 is an abundant number, since it is smaller than the sum of its proper divisors (18425293824).

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

6422115840 is a wasteful number, since it uses less digits than its factorization.

6422115840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7077 (or 7061 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 6422115840 is about 80138.1047941614. The cubic root of 6422115840 is about 1858.7716713684.

The spelling of 6422115840 in words is "six billion, four hundred twenty-two million, one hundred fifteen thousand, eight hundred forty".