12400415533 has 12 divisors (see below), whose sum is σ = 13673797564. Its totient is φ = 11237054400.

The previous prime is 12400415513. The next prime is 12400415537. The reversal of 12400415533 is 33551400421.

It can be written as a sum of positive squares in 2 ways, for example, as 49871844 + 12350543689 = 7062^2 + 111133^2 .

It is a de Polignac number, because none of the positive numbers 2^k-12400415533 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12400415537) 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 11 ways as a sum of consecutive naturals, for example, 125838 + ... + 201583.

Almost surely, 2^12400415533 is an apocalyptic number.

It is an amenable number.

12400415533 is a deficient number, since it is larger than the sum of its proper divisors (1273382031).

12400415533 is a wasteful number, since it uses less digits than its factorization.

12400415533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327756 (or 327745 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

Adding to 12400415533 its reverse (33551400421), we get a palindrome (45951815954).

The spelling of 12400415533 in words is "twelve billion, four hundred million, four hundred fifteen thousand, five hundred thirty-three".