28417662997 has 2 divisors, whose sum is σ = 28417662998. Its totient is φ = 28417662996.

The previous prime is 28417662979. The next prime is 28417663009. The reversal of 28417662997 is 79926671482.

Together with previous prime (28417662979) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20793928401 + 7623734596 = 144201^2 + 87314^2 .

It is a cyclic number.

It is not a de Polignac number, because 28417662997 - 2²⁷ = 28283445269 is a prime.

It is a super-2 number, since 2×28417662997² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28417669997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14208831498 + 14208831499.

It is an arithmetic number, because the mean of its divisors is an integer number (14208831499).

Almost surely, 2^28417662997 is an apocalyptic number.

It is an amenable number.

28417662997 is a deficient number, since it is larger than the sum of its proper divisors (1).

28417662997 is an equidigital number, since it uses as much as digits as its factorization.

28417662997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18289152, while the sum is 61.

The spelling of 28417662997 in words is "twenty-eight billion, four hundred seventeen million, six hundred sixty-two thousand, nine hundred ninety-seven".