622115155440 has 240 divisors, whose sum is σ = 2146625616096. Its totient is φ = 161346816000.

The previous prime is 622115155421. The next prime is 622115155507. The reversal of 622115155440 is 44551511226.

622115155440 is a `hidden beast` number, since 6 + 2 + 2 + 11 + 51 + 554 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 622115155395 and 622115155404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 123900130 + ... + 123905150.

Almost surely, 2^622115155440 is an apocalyptic number.

622115155440 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 622115155440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1073312808048).

622115155440 is an abundant number, since it is smaller than the sum of its proper divisors (1524510460656).

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

622115155440 is a wasteful number, since it uses less digits than its factorization.

622115155440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9728 (or 9719 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 36.

Adding to 622115155440 its reverse (44551511226), we get a palindrome (666666666666).

The spelling of 622115155440 in words is "six hundred twenty-two billion, one hundred fifteen million, one hundred fifty-five thousand, four hundred forty".