400350125543 has 2 divisors, whose sum is σ = 400350125544. Its totient is φ = 400350125542.

The previous prime is 400350125537. The next prime is 400350125551. The reversal of 400350125543 is 345521053004.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400350125543 is a prime.

It is a super-2 number, since 2×400350125543² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400370125543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200175062771 + 200175062772.

It is an arithmetic number, because the mean of its divisors is an integer number (200175062772).

Almost surely, 2^400350125543 is an apocalyptic number.

400350125543 is a deficient number, since it is larger than the sum of its proper divisors (1).

400350125543 is an equidigital number, since it uses as much as digits as its factorization.

400350125543 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 400350125543 its reverse (345521053004), we get a palindrome (745871178547).

The spelling of 400350125543 in words is "four hundred billion, three hundred fifty million, one hundred twenty-five thousand, five hundred forty-three".