401256452420347 has 2 divisors, whose sum is σ = 401256452420348. Its totient is φ = 401256452420346.

The previous prime is 401256452420269. The next prime is 401256452420389. The reversal of 401256452420347 is 743024254652104.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401256452420347 is a prime.

It is a super-2 number, since 2×401256452420347² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401256452420347.

It is not a weakly prime, because it can be changed into another prime (401256452421347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200628226210173 + 200628226210174.

It is an arithmetic number, because the mean of its divisors is an integer number (200628226210174).

Almost surely, 2^{401256452420347} is an apocalyptic number.

401256452420347 is a deficient number, since it is larger than the sum of its proper divisors (1).

401256452420347 is an equidigital number, since it uses as much as digits as its factorization.

401256452420347 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6451200, while the sum is 49.

The spelling of 401256452420347 in words is "four hundred one trillion, two hundred fifty-six billion, four hundred fifty-two million, four hundred twenty thousand, three hundred forty-seven".