219974479912 has 16 divisors (see below), whose sum is σ = 449947800000. Its totient is φ = 99988399920.

The previous prime is 219974479891. The next prime is 219974479919.

It is a happy number.

219974479912 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (219974479919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249854912 + ... + 1249855087.

It is an arithmetic number, because the mean of its divisors is an integer number (28121737500).

Almost surely, 2^219974479912 is an apocalyptic number.

219974479912 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

219974479912 is an abundant number, since it is smaller than the sum of its proper divisors (229973320088).

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

219974479912 is a wasteful number, since it uses less digits than its factorization.

219974479912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2499710016 (or 2499710012 counting only the distinct ones).

The product of its digits is 20575296, while the sum is 64.

The spelling of 219974479912 in words is "two hundred nineteen billion, nine hundred seventy-four million, four hundred seventy-nine thousand, nine hundred twelve".