202344121989 has 24 divisors (see below), whose sum is σ = 308707832160. Its totient is φ = 127360091232.

The previous prime is 202344121979. The next prime is 202344121997. The reversal of 202344121989 is 989121443202.

202344121989 is a `hidden beast` number, since 20 + 23 + 4 + 412 + 198 + 9 = 666.

It is not a de Polignac number, because 202344121989 - 2⁵ = 202344121957 is a prime.

It is a super-2 number, since 2×202344121989² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202344121979) 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, 1969179 + ... + 2069384.

It is an arithmetic number, because the mean of its divisors is an integer number (12862826340).

Almost surely, 2^202344121989 is an apocalyptic number.

It is an amenable number.

202344121989 is a deficient number, since it is larger than the sum of its proper divisors (106363710171).

202344121989 is a wasteful number, since it uses less digits than its factorization.

202344121989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4038881 (or 4038878 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The spelling of 202344121989 in words is "two hundred two billion, three hundred forty-four million, one hundred twenty-one thousand, nine hundred eighty-nine".