28812476437 has 2 divisors, whose sum is σ = 28812476438. Its totient is φ = 28812476436.

The previous prime is 28812476393. The next prime is 28812476453. The reversal of 28812476437 is 73467421882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16055677521 + 12756798916 = 126711^2 + 112946^2 .

It is a cyclic number.

It is not a de Polignac number, because 28812476437 - 2⁷ = 28812476309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28812476477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14406238218 + 14406238219.

It is an arithmetic number, because the mean of its divisors is an integer number (14406238219).

Almost surely, 2^28812476437 is an apocalyptic number.

It is an amenable number.

28812476437 is a deficient number, since it is larger than the sum of its proper divisors (1).

28812476437 is an equidigital number, since it uses as much as digits as its factorization.

28812476437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3612672, while the sum is 52.

The spelling of 28812476437 in words is "twenty-eight billion, eight hundred twelve million, four hundred seventy-six thousand, four hundred thirty-seven".