400212433045457 has 2 divisors, whose sum is σ = 400212433045458. Its totient is φ = 400212433045456.

The previous prime is 400212433045421. The next prime is 400212433045463. The reversal of 400212433045457 is 754540334212004.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 368744416992961 + 31468016052496 = 19202719^2 + 5609636^2 .

It is a cyclic number.

It is not a de Polignac number, because 400212433045457 - 2¹⁰ = 400212433044433 is a prime.

It is not a weakly prime, because it can be changed into another prime (400212433045657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200106216522728 + 200106216522729.

It is an arithmetic number, because the mean of its divisors is an integer number (200106216522729).

Almost surely, 2^{400212433045457} is an apocalyptic number.

It is an amenable number.

400212433045457 is a deficient number, since it is larger than the sum of its proper divisors (1).

400212433045457 is an equidigital number, since it uses as much as digits as its factorization.

400212433045457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 44.

The spelling of 400212433045457 in words is "four hundred trillion, two hundred twelve billion, four hundred thirty-three million, forty-five thousand, four hundred fifty-seven".