202244400423 has 64 divisors (see below), whose sum is σ = 336840698880. Its totient is φ = 118996504704.

The previous prime is 202244400401. The next prime is 202244400431. The reversal of 202244400423 is 324004442202.

It is not a de Polignac number, because 202244400423 - 2²¹ = 202242303271 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202244400023) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 28712140 + ... + 28719182.

It is an arithmetic number, because the mean of its divisors is an integer number (5263135920).

Almost surely, 2^202244400423 is an apocalyptic number.

202244400423 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

202244400423 is a deficient number, since it is larger than the sum of its proper divisors (134596298457).

202244400423 is a wasteful number, since it uses less digits than its factorization.

202244400423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10645 (or 10639 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 27.

Adding to 202244400423 its reverse (324004442202), we get a palindrome (526248842625).

The spelling of 202244400423 in words is "two hundred two billion, two hundred forty-four million, four hundred thousand, four hundred twenty-three".