28552174649 has 2 divisors, whose sum is σ = 28552174650. Its totient is φ = 28552174648.

The previous prime is 28552174613. The next prime is 28552174661. The reversal of 28552174649 is 94647125582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19444908025 + 9107266624 = 139445^2 + 95432^2 .

It is a cyclic number.

It is not a de Polignac number, because 28552174649 - 2¹² = 28552170553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28552174649.

It is not a weakly prime, because it can be changed into another prime (28552171649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14276087324 + 14276087325.

It is an arithmetic number, because the mean of its divisors is an integer number (14276087325).

Almost surely, 2^28552174649 is an apocalyptic number.

It is an amenable number.

28552174649 is a deficient number, since it is larger than the sum of its proper divisors (1).

28552174649 is an equidigital number, since it uses as much as digits as its factorization.

28552174649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4838400, while the sum is 53.

The spelling of 28552174649 in words is "twenty-eight billion, five hundred fifty-two million, one hundred seventy-four thousand, six hundred forty-nine".