28370254873 has 2 divisors, whose sum is σ = 28370254874. Its totient is φ = 28370254872.

The previous prime is 28370254853. The next prime is 28370254877. The reversal of 28370254873 is 37845207382.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27392567049 + 977687824 = 165507^2 + 31268^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28370254873 is a prime.

It is a super-2 number, since 2×28370254873² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (28370254877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14185127436 + 14185127437.

It is an arithmetic number, because the mean of its divisors is an integer number (14185127437).

Almost surely, 2^28370254873 is an apocalyptic number.

It is an amenable number.

28370254873 is a deficient number, since it is larger than the sum of its proper divisors (1).

28370254873 is an equidigital number, since it uses as much as digits as its factorization.

28370254873 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2257920, while the sum is 49.

The spelling of 28370254873 in words is "twenty-eight billion, three hundred seventy million, two hundred fifty-four thousand, eight hundred seventy-three".