28571103433 has 2 divisors, whose sum is σ = 28571103434. Its totient is φ = 28571103432.

The previous prime is 28571103389. The next prime is 28571103443. The reversal of 28571103433 is 33430117582.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17636636809 + 10934466624 = 132803^2 + 104568^2 .

It is a cyclic number.

It is not a de Polignac number, because 28571103433 - 2²¹ = 28569006281 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28571103392 and 28571103401.

It is not a weakly prime, because it can be changed into another prime (28571103443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14285551716 + 14285551717.

It is an arithmetic number, because the mean of its divisors is an integer number (14285551717).

Almost surely, 2^28571103433 is an apocalyptic number.

It is an amenable number.

28571103433 is a deficient number, since it is larger than the sum of its proper divisors (1).

28571103433 is an equidigital number, since it uses as much as digits as its factorization.

28571103433 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 60480, while the sum is 37.

The spelling of 28571103433 in words is "twenty-eight billion, five hundred seventy-one million, one hundred three thousand, four hundred thirty-three".