18429056212 has 72 divisors (see below), whose sum is σ = 38217432960. Its totient is φ = 7751580480.

The previous prime is 18429056207. The next prime is 18429056221. The reversal of 18429056212 is 21265092481.

It is a happy number.

It is a super-2 number, since 2×18429056212² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3183873 + ... + 3189655.

It is an arithmetic number, because the mean of its divisors is an integer number (530797680).

Almost surely, 2^18429056212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18429056212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19108716480).

18429056212 is an abundant number, since it is smaller than the sum of its proper divisors (19788376748).

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

18429056212 is a wasteful number, since it uses less digits than its factorization.

18429056212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6101 (or 6092 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 18429056212 in words is "eighteen billion, four hundred twenty-nine million, fifty-six thousand, two hundred twelve".