28377278274473 has 2 divisors, whose sum is σ = 28377278274474. Its totient is φ = 28377278274472.

The previous prime is 28377278274437. The next prime is 28377278274577. The reversal of 28377278274473 is 37447287277382.

Together with previous prime (28377278274437) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18253376125609 + 10123902148864 = 4272397^2 + 3181808^2 .

It is a cyclic number.

It is not a de Polignac number, because 28377278274473 - 2³⁸ = 28102400367529 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28377278274397 and 28377278274406.

It is not a weakly prime, because it can be changed into another prime (28377278274403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14188639137236 + 14188639137237.

It is an arithmetic number, because the mean of its divisors is an integer number (14188639137237).

Almost surely, 2^{28377278274473} is an apocalyptic number.

It is an amenable number.

28377278274473 is a deficient number, since it is larger than the sum of its proper divisors (1).

28377278274473 is an equidigital number, since it uses as much as digits as its factorization.

28377278274473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1239146496, while the sum is 71.

The spelling of 28377278274473 in words is "twenty-eight trillion, three hundred seventy-seven billion, two hundred seventy-eight million, two hundred seventy-four thousand, four hundred seventy-three".