32400400403 has 8 divisors (see below), whose sum is σ = 38638987008. Its totient is φ = 26564303304.

The previous prime is 32400400399. The next prime is 32400400441. The reversal of 32400400403 is 30400400423.

It is a happy number.

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

It is not a de Polignac number, because 32400400403 - 2² = 32400400399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32400400003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100622201 + ... + 100622522.

It is an arithmetic number, because the mean of its divisors is an integer number (4829873376).

Almost surely, 2^32400400403 is an apocalyptic number.

32400400403 is a deficient number, since it is larger than the sum of its proper divisors (6238586605).

32400400403 is a wasteful number, since it uses less digits than its factorization.

32400400403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201244753.

The product of its (nonzero) digits is 1152, while the sum is 20.

Adding to 32400400403 its sum of digits (20), we get a palindrome (32400400423).

Adding to 32400400403 its reverse (30400400423), we get a palindrome (62800800826).

The spelling of 32400400403 in words is "thirty-two billion, four hundred million, four hundred thousand, four hundred three".