21830461778199 has 8 divisors (see below), whose sum is σ = 29210867006832. Its totient is φ = 14501848867520.

The previous prime is 21830461778183. The next prime is 21830461778227. The reversal of 21830461778199 is 99187716403812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21830461778199 - 2⁴ = 21830461778183 is a prime.

It is a super-2 number, since 2×21830461778199² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21830461778999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12948078504 + ... + 12948080189.

It is an arithmetic number, because the mean of its divisors is an integer number (3651358375854).

Almost surely, 2^{21830461778199} is an apocalyptic number.

21830461778199 is a deficient number, since it is larger than the sum of its proper divisors (7380405228633).

21830461778199 is a wasteful number, since it uses less digits than its factorization.

21830461778199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25896158977.

The product of its (nonzero) digits is 36578304, while the sum is 66.

The spelling of 21830461778199 in words is "twenty-one trillion, eight hundred thirty billion, four hundred sixty-one million, seven hundred seventy-eight thousand, one hundred ninety-nine".