400450233345251 has 2 divisors, whose sum is σ = 400450233345252. Its totient is φ = 400450233345250.

The previous prime is 400450233345139. The next prime is 400450233345271. The reversal of 400450233345251 is 152543332054004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 400450233345251 - 2¹⁸ = 400450233083107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 400450233345199 and 400450233345208.

It is not a weakly prime, because it can be changed into another prime (400450233345271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200225116672625 + 200225116672626.

It is an arithmetic number, because the mean of its divisors is an integer number (200225116672626).

Almost surely, 2^{400450233345251} is an apocalyptic number.

400450233345251 is a deficient number, since it is larger than the sum of its proper divisors (1).

400450233345251 is an equidigital number, since it uses as much as digits as its factorization.

400450233345251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864000, while the sum is 41.

Adding to 400450233345251 its reverse (152543332054004), we get a palindrome (552993565399255).

The spelling of 400450233345251 in words is "four hundred trillion, four hundred fifty billion, two hundred thirty-three million, three hundred forty-five thousand, two hundred fifty-one".