28781416141 has 2 divisors, whose sum is σ = 28781416142. Its totient is φ = 28781416140.

The previous prime is 28781416133. The next prime is 28781416193. The reversal of 28781416141 is 14161418782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24740144100 + 4041272041 = 157290^2 + 63571^2 .

It is a cyclic number.

It is not a de Polignac number, because 28781416141 - 2³ = 28781416133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28781416541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14390708070 + 14390708071.

It is an arithmetic number, because the mean of its divisors is an integer number (14390708071).

Almost surely, 2^28781416141 is an apocalyptic number.

It is an amenable number.

28781416141 is a deficient number, since it is larger than the sum of its proper divisors (1).

28781416141 is an equidigital number, since it uses as much as digits as its factorization.

28781416141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 86016, while the sum is 43.

The spelling of 28781416141 in words is "twenty-eight billion, seven hundred eighty-one million, four hundred sixteen thousand, one hundred forty-one".