18429056211 has 4 divisors (see below), whose sum is σ = 24572074952. Its totient is φ = 12286037472.

The previous prime is 18429056207. The next prime is 18429056221. The reversal of 18429056211 is 11265092481.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11265092481 = 3 ⋅3755030827.

It is not a de Polignac number, because 18429056211 - 2² = 18429056207 is a prime.

It is a super-2 number, since 2×18429056211² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18429056211.

It is not an unprimeable number, because it can be changed into a prime (18429056221) 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, 3071509366 + ... + 3071509371.

It is an arithmetic number, because the mean of its divisors is an integer number (6143018738).

Almost surely, 2^18429056211 is an apocalyptic number.

18429056211 is a deficient number, since it is larger than the sum of its proper divisors (6143018741).

18429056211 is an equidigital number, since it uses as much as digits as its factorization.

18429056211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143018740.

The product of its (nonzero) digits is 34560, while the sum is 39.

The spelling of 18429056211 in words is "eighteen billion, four hundred twenty-nine million, fifty-six thousand, two hundred eleven".