6415220269818 has 32 divisors (see below), whose sum is σ = 14559365157120. Its totient is φ = 2092908739680.

The previous prime is 6415220269817. The next prime is 6415220269963. The reversal of 6415220269818 is 8189620225146.

6415220269818 is a `hidden beast` number, since 6 + 4 + 1 + 522 + 0 + 26 + 98 + 1 + 8 = 666.

It is a super-2 number, since 2×6415220269818² (a number of 26 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (6415220269817) 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, 1263831243 + ... + 1263836318.

It is an arithmetic number, because the mean of its divisors is an integer number (454980161160).

Almost surely, 2^{6415220269818} is an apocalyptic number.

6415220269818 is an abundant number, since it is smaller than the sum of its proper divisors (8144144887302).

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

6415220269818 is a wasteful number, since it uses less digits than its factorization.

6415220269818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527667619 (or 2527667613 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 6415220269818 in words is "six trillion, four hundred fifteen billion, two hundred twenty million, two hundred sixty-nine thousand, eight hundred eighteen".