21230196037806 has 48 divisors (see below), whose sum is σ = 49453755558480. Its totient is φ = 6058272366720.

The previous prime is 21230196037753. The next prime is 21230196037807. The reversal of 21230196037806 is 60873069103212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230196037807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44392285 + ... + 44867976.

It is an arithmetic number, because the mean of its divisors is an integer number (1030286574135).

Almost surely, 2^{21230196037806} is an apocalyptic number.

21230196037806 is an abundant number, since it is smaller than the sum of its proper divisors (28223559520674).

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

21230196037806 is a wasteful number, since it uses less digits than its factorization.

21230196037806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89261089 (or 89261082 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 21230196037806 in words is "twenty-one trillion, two hundred thirty billion, one hundred ninety-six million, thirty-seven thousand, eight hundred six".