400521340233 has 12 divisors (see below), whose sum is σ = 661178085568. Its totient is φ = 228869337240.

The previous prime is 400521340201. The next prime is 400521340253. The reversal of 400521340233 is 332043125004.

400521340233 is a `hidden beast` number, since 40 + 0 + 5 + 213 + 402 + 3 + 3 = 666.

It is not a de Polignac number, because 400521340233 - 2⁵ = 400521340201 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400521340197 and 400521340206.

It is not an unprimeable number, because it can be changed into a prime (400521340253) 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, 3178740733 + ... + 3178740858.

Almost surely, 2^400521340233 is an apocalyptic number.

It is an amenable number.

400521340233 is a deficient number, since it is larger than the sum of its proper divisors (260656745335).

400521340233 is a wasteful number, since it uses less digits than its factorization.

400521340233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6357481604 (or 6357481601 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 400521340233 its reverse (332043125004), we get a palindrome (732564465237).

The spelling of 400521340233 in words is "four hundred billion, five hundred twenty-one million, three hundred forty thousand, two hundred thirty-three".