28201457629 has 2 divisors, whose sum is σ = 28201457630. Its totient is φ = 28201457628.

The previous prime is 28201457623. The next prime is 28201457639. The reversal of 28201457629 is 92675410282.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28193768100 + 7689529 = 167910^2 + 2773^2 .

It is a cyclic number.

It is not a de Polignac number, because 28201457629 - 2¹⁷ = 28201326557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28201457623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14100728814 + 14100728815.

It is an arithmetic number, because the mean of its divisors is an integer number (14100728815).

Almost surely, 2^28201457629 is an apocalyptic number.

It is an amenable number.

28201457629 is a deficient number, since it is larger than the sum of its proper divisors (1).

28201457629 is an equidigital number, since it uses as much as digits as its factorization.

28201457629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 28201457629 in words is "twenty-eight billion, two hundred one million, four hundred fifty-seven thousand, six hundred twenty-nine".