202244400391 has 8 divisors (see below), whose sum is σ = 220678055568. Its totient is φ = 183818712000.

The previous prime is 202244400367. The next prime is 202244400401. The reversal of 202244400391 is 193004442202.

202244400391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 202244400391 - 2¹⁷ = 202244269319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202244400091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1938550 + ... + 2040211.

It is an arithmetic number, because the mean of its divisors is an integer number (27584756946).

Almost surely, 2^202244400391 is an apocalyptic number.

202244400391 is a deficient number, since it is larger than the sum of its proper divisors (18433655177).

202244400391 is a wasteful number, since it uses less digits than its factorization.

202244400391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3983393.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 202244400391 its reverse (193004442202), we get a palindrome (395248842593).

The spelling of 202244400391 in words is "two hundred two billion, two hundred forty-four million, four hundred thousand, three hundred ninety-one".