20344217420 has 24 divisors (see below), whose sum is σ = 42744441264. Its totient is φ = 8133575616.

The previous prime is 20344217419. The next prime is 20344217461. The reversal of 20344217420 is 2471244302.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216227 + ... + 295706.

It is an arithmetic number, because the mean of its divisors is an integer number (1781018386).

Almost surely, 2^20344217420 is an apocalyptic number.

20344217420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20344217420 is an abundant number, since it is smaller than the sum of its proper divisors (22400223844).

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

20344217420 is a wasteful number, since it uses less digits than its factorization.

20344217420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513929 (or 513927 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 29.

The spelling of 20344217420 in words is "twenty billion, three hundred forty-four million, two hundred seventeen thousand, four hundred twenty".