28064462177 has 2 divisors, whose sum is σ = 28064462178. Its totient is φ = 28064462176.

The previous prime is 28064462119. The next prime is 28064462191. The reversal of 28064462177 is 77126446082.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25370436961 + 2694025216 = 159281^2 + 51904^2 .

It is a cyclic number.

It is not a de Polignac number, because 28064462177 - 2⁸ = 28064461921 is a prime.

It is a super-2 number, since 2×28064462177² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28064462197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14032231088 + 14032231089.

It is an arithmetic number, because the mean of its divisors is an integer number (14032231089).

Almost surely, 2^28064462177 is an apocalyptic number.

It is an amenable number.

28064462177 is a deficient number, since it is larger than the sum of its proper divisors (1).

28064462177 is an equidigital number, since it uses as much as digits as its factorization.

28064462177 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 47.

The spelling of 28064462177 in words is "twenty-eight billion, sixty-four million, four hundred sixty-two thousand, one hundred seventy-seven".