28547481511 has 2 divisors, whose sum is σ = 28547481512. Its totient is φ = 28547481510.

The previous prime is 28547481493. The next prime is 28547481629. The reversal of 28547481511 is 11518474582.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28547481511 - 2¹⁹ = 28546957223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28547482511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14273740755 + 14273740756.

It is an arithmetic number, because the mean of its divisors is an integer number (14273740756).

Almost surely, 2^28547481511 is an apocalyptic number.

28547481511 is a deficient number, since it is larger than the sum of its proper divisors (1).

28547481511 is an equidigital number, since it uses as much as digits as its factorization.

28547481511 is an evil number, because the sum of its binary digits is even.

The product of its digits is 358400, while the sum is 46.

The spelling of 28547481511 in words is "twenty-eight billion, five hundred forty-seven million, four hundred eighty-one thousand, five hundred eleven".