202438904937983 has 4 divisors (see below), whose sum is σ = 231358748500560. Its totient is φ = 173519061375408.

The previous prime is 202438904937911. The next prime is 202438904937991. The reversal of 202438904937983 is 389739409834202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 202438904937983 - 2²⁰ = 202438903889407 is a prime.

It is a super-2 number, since 2×202438904937983² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202438904937583) 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, 14459921781278 + ... + 14459921781291.

It is an arithmetic number, because the mean of its divisors is an integer number (57839687125140).

Almost surely, 2^{202438904937983} is an apocalyptic number.

202438904937983 is a deficient number, since it is larger than the sum of its proper divisors (28919843562577).

202438904937983 is an equidigital number, since it uses as much as digits as its factorization.

202438904937983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28919843562576.

The product of its (nonzero) digits is 564350976, while the sum is 71.

The spelling of 202438904937983 in words is "two hundred two trillion, four hundred thirty-eight billion, nine hundred four million, nine hundred thirty-seven thousand, nine hundred eighty-three".