28483178149021 has 2 divisors, whose sum is σ = 28483178149022. Its totient is φ = 28483178149020.

The previous prime is 28483178148983. The next prime is 28483178149031. The reversal of 28483178149021 is 12094187138482.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15636251232900 + 12846926916121 = 3954270^2 + 3584261^2 .

It is a cyclic number.

It is not a de Polignac number, because 28483178149021 - 2²⁵ = 28483144594589 is a prime.

It is a super-2 number, since 2×28483178149021² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28483178149031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14241589074510 + 14241589074511.

It is an arithmetic number, because the mean of its divisors is an integer number (14241589074511).

Almost surely, 2^{28483178149021} is an apocalyptic number.

It is an amenable number.

28483178149021 is a deficient number, since it is larger than the sum of its proper divisors (1).

28483178149021 is an equidigital number, since it uses as much as digits as its factorization.

28483178149021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6193152, while the sum is 58.

The spelling of 28483178149021 in words is "twenty-eight trillion, four hundred eighty-three billion, one hundred seventy-eight million, one hundred forty-nine thousand, twenty-one".