428522442629 has 2 divisors, whose sum is σ = 428522442630. Its totient is φ = 428522442628.

The previous prime is 428522442599. The next prime is 428522442661. The reversal of 428522442629 is 926244225824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388131492004 + 40390950625 = 623002^2 + 200975^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428522442629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428522442529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214261221314 + 214261221315.

It is an arithmetic number, because the mean of its divisors is an integer number (214261221315).

Almost surely, 2^428522442629 is an apocalyptic number.

It is an amenable number.

428522442629 is a deficient number, since it is larger than the sum of its proper divisors (1).

428522442629 is an equidigital number, since it uses as much as digits as its factorization.

428522442629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4423680, while the sum is 50.

The spelling of 428522442629 in words is "four hundred twenty-eight billion, five hundred twenty-two million, four hundred forty-two thousand, six hundred twenty-nine".