203640400022 has 8 divisors (see below), whose sum is σ = 315314167872. Its totient is φ = 98535677400.

The previous prime is 203640400009. The next prime is 203640400027. The reversal of 203640400022 is 220004046302.

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

It is a super-2 number, since 2×203640400022² (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 (203640400027) 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, 1642261229 + ... + 1642261352.

It is an arithmetic number, because the mean of its divisors is an integer number (39414270984).

Almost surely, 2^203640400022 is an apocalyptic number.

203640400022 is a deficient number, since it is larger than the sum of its proper divisors (111673767850).

203640400022 is a wasteful number, since it uses less digits than its factorization.

203640400022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3284522614.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 203640400022 its reverse (220004046302), we get a palindrome (423644446324).

The spelling of 203640400022 in words is "two hundred three billion, six hundred forty million, four hundred thousand, twenty-two".