400653922453 has 2 divisors, whose sum is σ = 400653922454. Its totient is φ = 400653922452.

The previous prime is 400653922439. The next prime is 400653922489. The reversal of 400653922453 is 354229356004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356083112529 + 44570809924 = 596727^2 + 211118^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400653922453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400653922423) 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 as a sum of consecutive naturals, namely, 200326961226 + 200326961227.

It is an arithmetic number, because the mean of its divisors is an integer number (200326961227).

Almost surely, 2^400653922453 is an apocalyptic number.

It is an amenable number.

400653922453 is a deficient number, since it is larger than the sum of its proper divisors (1).

400653922453 is an equidigital number, since it uses as much as digits as its factorization.

400653922453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 400653922453 in words is "four hundred billion, six hundred fifty-three million, nine hundred twenty-two thousand, four hundred fifty-three".